1- What is UTG like? Is he likely to come along when you call pre?
Readless I'd 3bet this pre as well and apart from turnsizing I'd play it the same.

2- Pre it could go either way for me between calling and folding because of his small 3bet size. It surprises me he called the flop raise, but I guess as played it's a decent tough call with TP or a small overpair and you still have some outs to those.