Tough TPTK Spot

[felix83]

Live 2-5 game 7-handed, has been going on for 2 hours.

SB is crafty but too loose
CO is weak-passive

Hero has been running the game over so far.

PF: Hero is UTG +1 with Ad 9d
UTG folds, Hero raises, folded to CO who calls, SB completes, BB folds.

Flop: (7 SB) 9c8c7d (3 players)
SB checks, Hero bets, CO raises quickly, SB reraises, Hero...?