[AK87]

Villain I am not familiar with but, if you guys remember, I posted a hand yesterday where I made a very thin riv bet and was c/r. Well villain (this hand) posted in that thread that other villain (other hand) can have AJ or KJ. I asked him at the table before this hand if he would call, and he said probably not. Anyways, I called in the other hand and he indeed had KJ. I told villain in this hand about that, so he knows what I'm capable of.

PokerStars Game #12417367885: Hold'em No Limit ($10/$20) - 2007/10/03 - 15:43:31 (ET)
Table 'Bohlinia II' 6-max Seat #5 is the button
Seat 1: AK87 ($2000 in chips)
Seat 2: mindgamer ($2037 in chips)
Seat 3: plghh ($1875 in chips)
Seat 4: jaymac111 ($2465 in chips)
Seat 5: Humpity ($316 in chips)
Seat 6: hardkAre ($2207 in chips)
hardkAre: posts small blind $10
AK87: posts big blind $20
*** HOLE CARDS ***
Dealt to AK87 [Ks Kh]
mindgamer: folds
plghh: folds
jaymac111: folds
Humpity: folds
hardkAre: raises $50 to $70
AK87: calls $50
*** FLOP *** [As 9d Js]
hardkAre: bets $100
AK87: calls $100
*** TURN *** [As 9d Js] [Ad]
hardkAre: bets $240
AK87: calls $240
*** RIVER *** [As 9d Js Ad] [7h]
hardkAre: checks

I'm not really interested in any other street but river. The hand before river is not standard, but it's fine I think. Now, on river, do we check, bet/fold, bet/call?