Pocket aces on low coordinated board

[SlantNGo]

MP1 was new at the table. Everyone else was passive, either tight or slightly on the loose side. What do I do vs. the raise & all-in raise, and what should I have done if MP3 had folded?

Party Poker 1/2 Hold'em (10 handed) converter

Preflop: Hero is SB with A[img]/images/graemlins/diamond.gif[/img], A[img]/images/graemlins/club.gif[/img].
<font color="#666666">3 folds</font>, MP1 calls, <font color="#666666">1 fold</font>, MP3 calls, <font color="#666666">2 folds</font>, <font color="#CC3333">Hero raises</font>, BB calls, MP1 calls, MP3 calls.

Flop: (8 SB) 4[img]/images/graemlins/heart.gif[/img], 3[img]/images/graemlins/heart.gif[/img], 5[img]/images/graemlins/spade.gif[/img] <font color="#0000FF">(4 players)</font>
<font color="#CC3333">Hero bets</font>, BB calls, <font color="#CC3333">MP1 raises</font>, MP3 calls, Hero calls, BB calls.

Turn: (8 BB) T[img]/images/graemlins/spade.gif[/img] <font color="#0000FF">(4 players)</font>
<font color="#CC3333">Hero bets</font>, BB calls, <font color="#CC3333">MP1 raises</font>, <font color="#CC3333">MP3 raises $1 all-in</font>, Hero folds, BB calls, MP1 calls.

River: (14 BB) 8[img]/images/graemlins/diamond.gif[/img] <font color="#0000FF">(3 players)</font>
BB checks, <font color="#CC3333">MP1 bets</font>, BB folds.

Final Pot: 15 BB