$5, A8o MP1, M=6. Push or fold?

[MadMike]

I used to play limit mainly, so even playing A8o makes me queasey. Is this an obvious push or an obvious fold?

If it is an obvious push, how low do you go? A6+, KT+, 66+?
If this is an obvious fold, what do we need to push? AT+, KQ+, 99+?

TIA


PokerStars No-Limit Hold'em Tourney, Big Blind is t100 (7 handed) CP hand converter

Hero (t800)
MP2 (t1065)
CO (t765)
Button (t3255)
SB (t975)
BB (t2880)
UTG (t3760)

Preflop: Hero is MP1 with 8[img]/images/graemlins/heart.gif[/img], A[img]/images/graemlins/club.gif[/img].
<font color="#666666">1 fold</font>, Hero ????