25NL - Combo Draws vs Aggro Fish OOP

[StarGrinder]

Playing OOP vs an aggro villain sucks and I tend to get in to these "WTF should I do here spots" quite often. This probably isn't the best example but it's a hand I just recently played so w/e. Looking for some feedback on hero lines and range analysis.

Hero is running 21/18 and Villain is 36/21 ~100 hands. Both have been pretty aggressive post-flop. Villain has raised cbets 3x over this sample. He hasn't topped up all session so I assume he's just an aggro-fish.

$0.10/$0.25 No Limit Holdem
PokerStars
7 Players
Hand Conversion Powered by weaktight.com

Stacks:
UTG ($25)
Hero ($28.32)
MP ($14.68)
CO ($43.06)
BTN ($12.63)
SB ($29.76)
BB ($27.49)

Pre-Flop: ($0.35, 7 players) Hero is UTG+1
1 fold, Hero raises to $0.75, MP calls $0.75, 4 folds

Other than MP, CO and BTN are both nits and the blinds have been calling OOP with crap so I pop it with a meh hand. I can definitely see a fold here, but that's not the point. Villain's calling range is pairs, broadways, suited Ax, maybe some SCs 76-T9s, Q9s, J9s, etc. Anyway...

Flop: ($1.85, 2 players)
Hero checks, MP bets $1.50, Hero calls $1.50

While I do like this flop, I hate being OOP vs a laggtard and I don't want to commit 60bb to the hand just yet... thoughts? IMO a check/call is best in this spot since I assume villain will raise or fold but if I check he's almost certainly going to bet with the majority of his range and I'd like to keep him in with worse hands.

Turn: ($4.85, 2 players)
Hero checks, MP bets $2.50, $2.5 to Hero ($26.07)?

So this is a pretty good card (OESD +2nd NFD) and my middle pair could be best (but I'm not really counting on it). Villain has about 50bb after the flop and will barrel a wide range. Should we just bet/jam here? Check/call? C/R allin? He's going to call with 2p, 1p combo draws, AdX, sets, and made hands so I'm pretty close to 50% equity against his stacking off range, no? (FWIW Hero C/R'd and said Arrrrgh-In!)

This is pretty wide and includes some blockers but w/e {QQ-99,AdTd,Ad9d,Ad8d,Ad7d,Ad6d,Ad5d,Ad4d,Ad3d,Ad2d,KJ s+,Q9s+,J9s+,T9s,AdQc,AdTc,Ad9c,Ad8c,Ad7c,Ad6c,Ad5 c,Ad4c,Ad3c,Ad2c,KTo+,Q9o+,J9o+,T9o}