Small edge w/ AKo?

[PrayingMantis]

$109 MTT, early, blinds are 15/30. I have 1400.

Folded to CO, 2800, very loose and pretty bad player who mini-raises. I have AKo on the button. Behind me on the SB sits a very aggressive manic player, w/ 730, who will easily raise over the top here with any pair and most aces, and other random stuff too (some Kx for instance). I think that if I raise CO I might lose SB's action. So I flat call the miniraise. SB pushes. Folded to CO who rereraises all-in (2800). Very good chances I'm against a combination of some pair and a weaker ace, although there's a somewhat better chance that SB holds the weak ace and CO the pair (CO obviously doesn't have trash here).

Your thoughts?