Raise preflop and the hand plays differently.

If MP1 will raise all hands including AJ, AQ, AT - I like the flop bet.
If he won't, I just check and wait to see the action behind.
This is a very dry flop for raising and coldcalling hands.
If MP1 bets and it's folded to you, you can c/r and lead the turn.

The way you played, failing a maniac read, the turn is an easy bet/fold.