Monster Draw against good pro - genius or spew?

10/20 No limit, $4,500 effective

V in BB is a pro player, others are recreational. i have come off second best against villian in the past.

Straddle is on

HJ limps, BTN calls,

Hero SB Jh9h calls, BB calls, UTG calls.

Flop ($80)

8s 6s 5h

H bets $40, BB calls, UTG folds, HJ folds

Turn ($160)

8s6s5h Qh

I now have a combo draw, double gutter and flush draw. I consider betting or check raising.

I bet $200

V raises to $750

At this point I consider calling to realise my equity and consider my opponents range in this spot. Whats he repping here?

H goes all in $4,240.00

Great play or spew?