Top Pair w/ Straight Draw - Heavy Action

Ok, how would you have played my hand on the flop & turn?

What range of hands can you guess for opponents? Not much PTO info to go by. Relative unknowns.

***** Hand History for Game 3053004259 *****
$25 PL Omaha Hi/Lo - Thursday, November 17, 23:44:36 EDT 2005
Table Table 66590 (Real Money)
Seat 6 is the button
Total number of players : 9
Seat 2: aline28 ( $30.57 )
Seat 3: VILLAIN1 ( $14.66 )
Seat 5: Kendra1 ( $22.02 )
Seat 7: VILLAIN2 ( $24.25 )
Seat 8: thelaborer1 ( $49.46 )
Seat 10: hero ( $38.85 )
Seat 9: cigmans ( $25 )
Seat 4: Neelie ( $9.75 )
Seat 6: Rightface ( $33.95 )
VILLAIN2 posts small blind [$0.10].
thelaborer1 posts big blind [$0.25].
** Dealing down cards **
Dealt to hero [ 5s Tc 4c Ac ]
>You have options at Table 66007 Table!.
cigmans calls [$0.25].
hero calls [$0.25].
aline28 folds.
VILLAIN1 calls [$0.25].
Neelie folds.
Kendra1 folds.
Rightface folds.
VILLAIN2 calls [$0.15].
thelaborer1 checks.
** Dealing Flop ** [ 7c, As, 6s ]
VILLAIN2 checks.
thelaborer1 bets [$1.20].
cigmans calls [$1.20].
hero calls [$1.20].
VILLAIN1 raises [$7.20].
VILLAIN2 calls [$7.20].
thelaborer1 calls [$6].
cigmans calls [$6].
hero calls [$6].
** Dealing Turn ** [ Th ]
VILLAIN2 checks.
thelaborer1 checks.
cigmans checks.
hero ????