1. even against calling stations continuation bets are probably +ev on this flop. its already been pointed out that calling the flop is pointless. you should either continuation bet, check/raise, or check/fold.

2. make your raise to at least $3 here. Raising to 1.50 isnt getting much information or getting draws to fold

3. standard. utg+1 makes a really strong lead betting into 3 players after a prf.