100NL, AA in the BB faces an interesting flop decision

[threads13]

UTG+1 is a LAG who 3-bet me a few hands previous to this one. I folded to the 3-bet. I don't have much reads on him, but he seems to be a decent player from the hands I have seen him showdown.

No reads on the other 2 players.

Poker Stars
No Limit Holdem Ring game
Blinds: $0.55/$1.1
9 players
Converter

Stack sizes:
Threads13: $7.65
UTG+1: $20
MP1: $7.65
MP2: $3.95
MP3: $80
CO: $8.30
Button: $4.75
SB: $50
BB: $60

Pre-flop: (9 players) Threads13 is UTG with A[img]/images/graemlins/diamond.gif[/img] A[img]/images/graemlins/heart.gif[/img]
UTG+1 folds, <font color="#cc0000">MP1 raises to $0</font>, MP2 calls, 4 folds, BB calls, <font color="#cc0000">Threads13 raises to $0</font>, MP1 calls, MP2 calls, BB calls.

Flop: 7[img]/images/graemlins/spade.gif[/img] T[img]/images/graemlins/heart.gif[/img] 8[img]/images/graemlins/club.gif[/img] ($0.55, 4 players)
BB checks, Threads13...?

Ok, what is the plan here. If bet, how much and what do you do with a raise from certain players? If check, do you call a bet?