Bottom set on 3-flush board 200bb deep 50nl

[Debaser]

ugghhh this one had me well and truly stumped
.
utg is 36/1/1, button is 17/10/4, a decent reg. if a bit nitty. Both over massive samples.

Prima Poker skin
No Limit Holdem Ring game
Blinds: $0.25/$0.50
6 players
Converter (http://www.neildewhurst.com/hand-converter)

Stack sizes:
UTG: $67.34
UTG+1: $25.73
Hero: $100.04
Button: $111.12
SB: $60.70
BB: $44.67

Pre-flop: (6 players) Hero is CO with 5/images/graemlins/heart.gif 5/images/graemlins/spade.gif
UTG calls, UTG+1 folds, <font color="#cc0000">Hero raises to $2.5</font>, Button calls, 2 folds, UTG calls.

Flop: 5/images/graemlins/club.gif A/images/graemlins/club.gif 7/images/graemlins/club.gif ($8.25, 3 players)
UTG checks, <font color="#cc0000">Hero bets $6</font>, <font color="#cc0000">Button raises to $18</font>, UTG calls, Hero ???

Shoving this deep seems a bit reckless, since both villains would play 77 this way pf. Folding a set in a raised pot is just sickening. If I call the $12 and see the turn tho bad things are bound to happen BECAUSE THEY ALWAYS [censored] DO...

Suggestions for a blank turn or A/7 turn would be much appreciated too...

[Jago]

Calls and donks out on a non-club turn, and shoving if raised? 77 is def. possible but i think a nitty btn would cold call AKs in position

[skiller3]

Button probably has AQ, AK, 77 or a flush. UTG might be donkish enough to have any of these as well as a K-high flush draw or maybe even weaker aces. I would call because you are deep and if the board pairs you could very well end up winning a big pot. However, 200bb deep and against a 17/10/4 I wouldn't be surprised to have to dump the hand on turn--I really am just looking to boat up here.

[Poker Jon]

I call and stick it in on any turn other than a club. If 77, then so be it