Need advice on a couple HHs from final table of a MTT

Alright, there's two hands from a MTT that I felt could use a second opinion. This first one was the hand I busted out on, and the remaining players were playing surprisingly tight and giving away their blinds quite often. Considering this, was there a better way I should have played this hand?

PokerStars Game #2206096178: Tournament #10602226, Hold'em No Limit -
Level XII (1000/2000) - 2005/07/28 - 05:06:02 (ET)
Table '10602226 5' Seat #1 is the button
Seat 1: bluedevil907 (15005 in chips)
Seat 5: JADE7 (34140 in chips)
Seat 6: fsufan_7 (18355 in chips)
bluedevil907: posts the ante 100
JADE7: posts the ante 100
fsufan_7: posts the ante 100
JADE7: posts small blind 1000
fsufan_7: posts big blind 2000
*** HOLE CARDS ***
Dealt to bluedevil907 [9s Qd]
bluedevil907: raises 6000 to 8000
JADE7: folds
fsufan_7: raises 6000 to 14000
bluedevil907: raises 905 to 14905 and is all-in
fsufan_7: calls 905
*** FLOP *** [Qc 3c 4s]
*** TURN *** [Qc 3c 4s] [Ks]
*** RIVER *** [Qc 3c 4s Ks] [Js]
*** SHOW DOWN ***
fsufan_7: shows [Kh 7h] (a pair of Kings)
bluedevil907: shows [9s Qd] (a pair of Queens)
bluedevil907 said, "gg"
fsufan_7 collected 31110 from pot
*** SUMMARY ***
Total pot 31110 | Rake 0
Board [Qc 3c 4s Ks Js]
Seat 1: bluedevil907 (button) showed [9s Qd] and lost with a pair of
Queens
Seat 5: JADE7 (small blind) folded before Flop
Seat 6: fsufan_7 (big blind) showed [Kh 7h] and won (31110) with a pair
of Kings

This is the second hand that I thought needed some help, especially since I lost a HUMONGOUS chunk of my chips. Table play at this point was also pretty tight, but the chip leader was calling for almost every flop.

PokerStars Game #2206084425: Tournament #10602226, Hold'em No Limit -
Level XII (1000/2000) - 2005/07/28 - 05:00:38 (ET)
Table '10602226 5' Seat #6 is the button
Seat 1: bluedevil907 (23635 in chips)
Seat 2: saiyaman (4235 in chips)
Seat 5: JADE7 (29475 in chips)
Seat 6: fsufan_7 (10155 in chips)
bluedevil907: posts the ante 100
saiyaman: posts the ante 100
JADE7: posts the ante 100
fsufan_7: posts the ante 100
bluedevil907: posts small blind 1000
saiyaman: posts big blind 2000
*** HOLE CARDS ***
Dealt to bluedevil907 [As Th]
JADE7: calls 2000
fsufan_7: folds
bluedevil907: raises 6000 to 8000
saiyaman: folds
JADE7: calls 6000
*** FLOP *** [Kd Jh 2d]
bluedevil907: bets 2000
JADE7: raises 4000 to 6000
bluedevil907: calls 4000
*** TURN *** [Kd Jh 2d] [9d]
bluedevil907: checks
JADE7: bets 6000
bluedevil907: folds
JADE7 collected 30400 from pot
JADE7: doesn't show hand
*** SUMMARY ***
Total pot 30400 | Rake 0
Board [Kd Jh 2d 9d]
Seat 1: bluedevil907 (small blind) folded on the Turn
Seat 2: saiyaman (big blind) folded before Flop
Seat 5: JADE7 collected (30400)
Seat 6: fsufan_7 (button) folded before Flop (didn't bet)

hand 1: dont raise so much preflop if at all, and dont call the reraise, Ax,Kx, and any PP are all favored vs. Qx.
hand 2: fold when you get raised on the flop

Hand 2: fold when re-raised on the flop. If you call, lead out on the turn.... your check was too weak...this is how I bluffed someone on the same situation:

PokerStars Game #2212517356: Tournament #10635618, Hold'em No Limit - Level VI (100/200) - 2005/07/29 - 00:48:53 (ET)
Table '10635618 1' Seat #1 is the button
Seat 1: puckstopper1 (3325 in chips)
Seat 2: wishingheart (6375 in chips)
Seat 6: bencathers (3800 in chips)
wishingheart: posts small blind 100
bencathers: posts big blind 200
*** HOLE CARDS ***
Dealt to bencathers [Ad 4d]
puckstopper1: raises 200 to 400
wishingheart: folds
bencathers: calls 200
*** FLOP *** [Th Qc Qd]
bencathers: checks
puckstopper1: bets 200
bencathers: raises 600 to 800
puckstopper1: calls 600
*** TURN *** [Th Qc Qd] [3c]
bencathers: bets 800
puckstopper1: folds
bencathers collected 2500 from pot
bencathers: shows [Ad 4d] (a pair of Queens)
*** SUMMARY ***
Total pot 2500 | Rake 0
Board [Th Qc Qd 3c]
Seat 1: puckstopper1 (button) folded on the Turn
Seat 2: wishingheart (small blind) folded before Flop
Seat 6: bencathers (big blind) collected (2500)

the guy immediately tilted a few hands later and it became a heads up match:

PokerStars Game #2212532430: Tournament #10635618, Hold'em No Limit - Level VI (100/200) - 2005/07/29 - 00:50:49 (ET)
Table '10635618 1' Seat #2 is the button
Seat 1: puckstopper1 (1825 in chips)
Seat 2: wishingheart (6375 in chips)
Seat 6: bencathers (5300 in chips)
bencathers: posts small blind 100
puckstopper1: posts big blind 200
*** HOLE CARDS ***
Dealt to bencathers [Qs Jd]
wishingheart: calls 200
bencathers: calls 100
puckstopper1: checks
*** FLOP *** [4s 5h Qd]
bencathers: bets 200
puckstopper1: calls 200
wishingheart: calls 200
*** TURN *** [4s 5h Qd] [9s]
bencathers: bets 200
puckstopper1: raises 200 to 400
wishingheart: folds
bencathers: raises 4500 to 4900 and is all-in
puckstopper1: calls 1025 and is all-in
*** RIVER *** [4s 5h Qd 9s] [8d]
*** SHOW DOWN ***
bencathers: shows [Qs Jd] (a pair of Queens)
puckstopper1: shows [8s Ah] (a pair of Eights)
bencathers collected 4050 from pot
bencathers said, "gg"
*** SUMMARY ***
Total pot 4050 | Rake 0
Board [4s 5h Qd 9s 8d]
Seat 1: puckstopper1 (big blind) showed [8s Ah] and lost with a pair of Eights
Seat 2: wishingheart (button) folded on the Turn
Seat 6: bencathers (small blind) showed [Qs Jd] and won (4050) with a pair of Queens

The first hand is a tough one. You made a big raise with a marginal hand from a bad position on a pot you had no stake in.

By betting half your chips preflop, you're pretty much either going to win the blinds or going to be forced to make a decision for all your chips. I wouldn't think that too many people are going to call this size of raise without having you beat. It might be a good stealing move if the blinds were smaller compared to your stack, or if the opponents both have weak hands, but that wasn't the case this time.

The size of the blinds compared to the size of your stack makes these kinds of moves necessary, but when he raised you for all in, you might have figured he had you beat 60%-70% of the time. Depends on the player. The players at the table were tight, but this guy was in the same position as you, getting fairly desperate compared to the blinds and he may have been making a move.

You had to choose between mucking your hand and losing half your stack or making the call on a marginal hand. You can only pay the blinds a few more times around the table at this stage, but you're not quite desperate, so it was a tough decision to make. I doubt I'd have played it as agressively as you did at the start, but if I had, I most likely would have made the call knowing I might have the worst hand, and hoping for a good set of cards.

After your raise, you have just under 7k in chips left. If you muck, that'll pay for the blinds two more times around. If you catch a good hand soon, you may be okay, getting back up to where you started. If you catch one after once around the table, even if you double up, you'll still only be at 7k or so.