What to do on this turn?

[LittleWing67]

This is from the HA game on FT. I am relatively new to PLO, and I have no idea what to do on this turn.

UTG was new to the table, and MP2 seemed to be very loose in the PLO game.

And would a pot-sized bet be better on the flop? Was looking to build a pot with the current nuts.

Full Tilt Poker
Pot Limit Omaha Ring game
Blinds: $0.50/$1
8 players
Converter

Stack sizes:
UTG: $105.55
Hero: $54.35
MP1: $100
MP2: $70.30
CO: $24.50
Button: $2.60
SB: $172.05
BB: $137.35

Pre-flop: (8 players) Hero is UTG+1 with 7[img]/images/graemlins/spade.gif[/img] A[img]/images/graemlins/spade.gif[/img] K[img]/images/graemlins/diamond.gif[/img] K[img]/images/graemlins/spade.gif[/img]
UTG calls, <font color="#cc0000">Hero raises to $2</font>, MP1 folds, MP2 calls, CO folds, <font color="#cc0000">Button raises all-in $2.6</font>, SB folds, BB calls, UTG calls, Hero calls, MP2 calls.

Flop: 8[img]/images/graemlins/heart.gif[/img] K[img]/images/graemlins/club.gif[/img] 7[img]/images/graemlins/heart.gif[/img] ($13.5, 4 players + 1 all-in - Main pot: $13.5)
BB checks, UTG checks, <font color="#cc0000">Hero bets $7.25</font>, MP2 calls, BB folds, UTG calls.

Turn: J[img]/images/graemlins/club.gif[/img] ($35.25, 3 players + 1 all-in - Main pot: $13.5, Sidepot 1: $21.75)
UTG checks, <font color="#cc0000">Hero ?

Three to a straight on the board, with lots of flush and straight draws. What do you do on the turn, and what's the plan on the river?