Slowplay?

[James.]

BB-pretty good player. probably the one of the best LHE players at this casino. i know his main game online is the party 30 as i've discussed the game with him in the past. he is capable of bluffing. he is a strong value-bettor. he is also capable of making pretty good folds. folds that, quite honestly, i don't feel comfortable making on a consistent basis. anyway, on to the hand:

i open K [img]/images/graemlins/spade.gif[/img]K [img]/images/graemlins/heart.gif[/img]UTG+1, button coldcalls, sb folds, BB 3bets, i 4bet, button folds, BB calls. his only calling can mean alot of things since i have position. what it does not mean is he doesn't have a monster.

Flop(10.5sb): A [img]/images/graemlins/club.gif[/img]9 [img]/images/graemlins/diamond.gif[/img]2 [img]/images/graemlins/heart.gif[/img]

he checks, i check?

what merits does this line(i intend to call down and bet if checked to)have against a pretty good player? if he is capable of folding a lower PP on the flop, combined with increasing his aggression(and action) on the big streets is there merit? do warning flags go up as soon as i check behind? should warning flags go up as soon as he checks it to me? because the pot is sizeable should i just bet HOPING for a fold? does it matter that he could checkraise this flop as a value bluff with JJ? would it be better to b/c the flop, call the turn and fold the river UI if he fires again? am i asking too many questions? thanks.