AK on the button

[Rosencrantz1]

3rd hand of a $5+.50 on Pokerroom; no reads as of yet.

Seat 1: CO ($1,300 in chips)
Seat 2: Hero [K[img]/images/graemlins/diamond.gif[/img],A[img]/images/graemlins/spade.gif[/img]] ($1,470 in chips)
Seat 3: SB ($1,320 in chips)
Seat 4: BB ($1,810 in chips)
Seat 5: UTG ($1,480 in chips)
Seat 6: UTG+1 ($1,190 in chips)
Seat 7: MP1 ($1,110 in chips)
Seat 8: MP2 ($2,450 in chips)
Seat 9: MP3 ($1,680 in chips)
Seat 10: Villain ($1,190 in chips)

ANTES/BLINDS
SB posts blind ($10), BB posts blind ($20).

PRE-FLOP
1 fold, UTG+1 calls $20, MP1 calls $20, 1 fold, MP3 calls $20, Villain calls $20, 1 fold, Hero bets $90, 1 fold, BB calls $70, UTG+1 calls $70, MP1 calls $70, MP3 calls $70, Villain calls $70.

FLOP [4[img]/images/graemlins/club.gif[/img],5[img]/images/graemlins/diamond.gif[/img],10[img]/images/graemlins/heart.gif[/img] ]
4 checks, Villain bets $100, Hero bets $375, 4 folds, Villain calls $275.

TURN [4[img]/images/graemlins/club.gif[/img],5[img]/images/graemlins/diamond.gif[/img],10[img]/images/graemlins/heart.gif[/img],J[img]/images/graemlins/heart.gif[/img] ]
Villain bets $225, Hero...

1) Should I have folded on the flop?

2) Should I push or fold on the turn?