[beenben]

PF - Generally, you want to bet 3x the BB. AJ is pretty strong six handed and your effective stack/blind ratio (M) is lower when it's six handed so you need to be aggressive. However, here your M is b/t 6 and 7 and your effective M, due to being only six handed, is actually just over half that so here you should've pushed pre-flop.

as played - you need to make a continuation bet. generally, you do this to continue your pre-flop aggression, to maintain control of the hand, and to avoid giving away free cards (this is a drawtastick board with 2 clubs, 3 high cards, and a few str8 possibilities). you hit the flop with top pair and your kicker is pretty good and you've got the backdoor str8 possibility so you're going to push all in on that flop.