broadway straight on paired board

[Aves]

A hand from live 10/20 the other night. Question mostly about my turn and river play.

A mostly solid player, but makes some somewhat loose calls postflop, raises UTG. A loose/weak calls UTG+1. 2 more cold calls in MP. I cold call on button with KcQc. BB calls.

6 to the flop (12 SB). Flop comes Ah Ts Tc. BB checks, UTG bets, all call except 1 of the MP cold callers.

5 to the turn (8.5 BB). Turn comes Js. UTG bets, UTG+1 raises, folds to me. I 3-bet.

A quick note on my thought process, when UTG+1 raised, I put him on trip tens since I thought he would just call with a boat and try to string a few more along. My main question is if I should just call and see if UTG reraises. I feel AT and of course JJ are in his range, but not JT.

Next question is if either of them 2 cap it, I am pretty sure they've boated up and I should just fold on the turn right? However, what do I do on river if they both call and river comes an offsuit 8? Or if just 1 of them call. Bet/fold?

Thanks for the responses.