Isolation play gone sticky-ICKY, 500K guaranteed

[DarrenX]

After losing half my stack with a flopped set vs. flopped straight early, we're on level 2: 10/20, I have 790. Uber-donk who limps way too much limps UTG+2 (he has 2600). Folded to me I pick up K [img]/images/graemlins/spade.gif[/img] J [img]/images/graemlins/spade.gif[/img] in the cutoff and attempt to isolate by raising to 85. Not quite- SB, BB and original limper call, prompting a 4-way pot of 340 and a flop of:

2 [img]/images/graemlins/heart.gif[/img] 7 [img]/images/graemlins/heart.gif[/img] J [img]/images/graemlins/heart.gif[/img]

Checked to uber-donk who minbets. I raise to 200 to test the waters, and to leave myself enough to push on the turn and give something to think about should a blank come. BB and original bettor calls. Turn is a 3 [img]/images/graemlins/club.gif[/img]. Check, check, I push my 505 into a 940 pot. BB uses his whole time bank and folds, uber-donk calls. Comments on my line?