$400/800 HU turn

[Schneids]

7 handed. UTG+1 limps. I raise with AJo in the SB. SenorFlush from Partypoker fame 3-bets in the BB. We know eachother somewhat well and have lots of history both from internet battles and lots of hours vs eachother the past week. SenorFlush also has a nice little rivalry with the limper, and those two are going back and forth quite often. He even says outloud, "I would have called but you are in so I have to 3-bet." Limper folds, I call.

Flop T98. I check, he bets, I raise, he calls. Turn 9. I check, he bets. Can/should I checkraise here? Can he call down with 66? I feel like he has a small pocket pair here so often. If I check/call the turn is the river a check/fold barring improvement (ie T, 8, Q, 7, J, A)?