[DJ Sensei]

3-bet your twoprrrr, JT or a spade draw with a jack are more likely hand here than a straight or set, given all of the actions so far. If he 4-bets, you can make a tight fold (assuming that stacks are deeper). If he calls, then valuebet clean rivers.

Unless you've seen him slowplay big hands on drawy boards before, in which case i'd just call his raise and probably his river bet (or fold to a bet on a nasty river, since I assume turning your hand into a bluff is ill-advised in a spread limit game with a big pot)

(You should put stacks in here too unless theyre so deep as to be irrelevant.)