I have a feeling i played this badly at every step.

I complete sb preflop figuring ill sneak in on 8:1 with lots of players for a nut FD.

Firstly, is this a really bad idea?

I bet flop thinking im hiding my hand and building the pot, 30 or 40c probably better right?

Then he raises big. whats his range here?...
J9, 77, 88, TT, 78s, T8s.
I doubt overpairs are here, i doubt other draws are here. Im a 60/40 dog to this range.

whats my move?

PokerStars No-Limit Hold'em, $0.10 BB (8 handed) - Poker-Stars Converter Tool from FlopTurnRiver.com

BB ($10)
UTG ($9.85)
UTG+1 ($10.15)
MP1 ($10)
MP2 ($13)
CO ($9.15)
Button ($10.65)
Hero (SB) ($10)

Preflop: Hero is SB with A, 9
UTG calls $0.10, 3 folds, CO calls $0.10, 1 fold, Hero calls $0.05, BB checks

Flop: ($0.40) 8, 10, 7 (4 players)
Hero bets $0.20, 1 fold, UTG raises to $1.20, 1 fold,Hero ?

apologies i cant remember his stats, probably standard nitty FR