Very awkward 2/4 double gutter

[mindless]

I'm at work, so sorry I'm posting this w/o hand history. Full Tilt 2/4 table, a fishy 35/3 or something limps UTG + 1 with about 400 behind, and I raise to 18 from the CO with K [img]/images/graemlins/heart.gif[/img] J [img]/images/graemlins/heart.gif[/img] and 800, and the button, who's playing about 21/15 and is a pretty good tag cold calls behind me with about 750. Blinds fold and the limper calls.

Flop comes down 7 [img]/images/graemlins/heart.gif[/img] 9 [img]/images/graemlins/diamond.gif[/img] T [img]/images/graemlins/spade.gif[/img]
Limper checks, I bet 45 into a 60 pot, and the button raises to 115. Limper folds and I call.

Turn is K [img]/images/graemlins/diamond.gif[/img]
I check, button bets 210 into a ~290 pot and has about 400 behind. What do you do?

If you call the turn, what are you doing on the following rivers:
A) King
B) deuce
C) Jack