NL25: Turn third nuts in limped pot

[Emperor Norton]

PokerStars No-Limit Hold'em, $0.25 BB (6 handed) Hand History Converter Tool (http://poker-tools.flopturnriver.com/Hand-Converter.php) from FlopTurnRiver.com (http://www.flopturnriver.com) (Format: 2+2 Forums)

Button ($23.10)
SB ($29.55)
Hero ($24.40)
UTG ($21.60)
MP ($14.65)
CO ($33.55)

Preflop: Hero is BB with 9/images/graemlins/club.gif, J/images/graemlins/club.gif. MP posts a blind of $0.35.
UTG calls $0.25, MP (poster) checks, <font color="#666666">1 fold</font>, Button calls $0.25, <font color="#666666">1 fold</font>, Hero checks.

Flop: ($1.20) 5/images/graemlins/club.gif, 7/images/graemlins/heart.gif, K/images/graemlins/club.gif <font color="#0000FF">(4 players)</font>
Hero checks, UTG checks, MP checks, Button checks.

Turn: ($1.20) 3/images/graemlins/club.gif <font color="#0000FF">(4 players)</font>
<font color="#CC3333">Hero bets $0.75</font>, UTG folds, MP folds, <font color="#CC3333">Button raises to $1.5</font>, Hero?

I hesitated here because I wasn't sure what I'd do if I raised and he four-bet. If I reraise (to around $5.5), will I ever be able to fold to further aggression without a read on villain? What if my flush were only ten-high?

[BevillTheDevil]

id rr we need to build up a pot esp since we are both deep...why would you wanta fold to further aggro?? im tryin to get AI here...if he 4bets and its not AI then im pushin

folding a J high flush here is ultra nitty and bad

[creamfillin]

Definitely treebet here, and if he pushed it would be a really tough decision. Is he doing it with a ten high flush or less? it's really hard to say. Completely readless I think I could find a fold to his 4B shove, but if I think he overvalues his hands in any way shape or form I get it in with a smile.

[Emperor Norton]

I suspected as much, which is why I did three-bet, but there's an inflection point somewhere. Do you still rush your chips into the middle with the four nuts? What about the fifth nuts? Figuring out where to draw the line makes it easier to make decisions like these in the future.