c/r all-in with nut flush draw?

Just reached final table of PS 4+4 180-man tourney. No reads on Rownzie. Comments welcome on this hand..

PokerStars Game #7324502945: Tournament #37450215, $4.00+$0.40 Hold'em No Limit - Level XII (800/1600) - 2006/12/06 - 12:30:13 (ET)
Table '37450215 8' 9-max Seat #4 is the button
Seat 1: intervuuuu (21425 in chips)
Seat 2: tazarina (32512 in chips)
Seat 3: rownzie (36535 in chips)
Seat 4: JRWOOD75 (21736 in chips)
Seat 5: Mantheman (27765 in chips)
Seat 6: -Tuuba- (42466 in chips)
Seat 7: grandparen (64451 in chips)
Seat 8: Mona511 (19045 in chips)
Seat 9: haffers (4065 in chips)
intervuuuu: posts the ante 75
tazarina: posts the ante 75
rownzie: posts the ante 75
JRWOOD75: posts the ante 75
Mantheman: posts the ante 75
-Tuuba-: posts the ante 75
grandparen: posts the ante 75
Mona511: posts the ante 75
haffers: posts the ante 75
Mantheman: posts small blind 800
-Tuuba-: posts big blind 1600
*** HOLE CARDS ***
Dealt to Mantheman [5h Ad]
grandparen: folds
Mona511: folds
haffers: folds
intervuuuu: folds
tazarina: folds
rownzie: calls 1600
JRWOOD75: folds
Mantheman: raises 2600 to 4200
-Tuuba-: folds
rownzie: calls 2600
*** FLOP *** [Td Jd 9d]
Mantheman: checks
rownzie: bets 8000
Mantheman: raises 15490 to 23490 and is all-in
rownzie: calls 15490

IMO the blinds are getting pretty high are you are one of the smaller stacks, seems as good a place as any to make your move I guess

If that's the same rownzie that's on FT, he's a huge LAAG, and not a very good one.