[locutus2002]

I think your range is too loose. How many players will miniraise with a9o and then push against an all in with one player behind leaving 1/2 the bet in the center pot.
i dont see a9,at,kq,kj,88,77,66 as a candidate for CO. And I don't really see aj,TT,jj miniraising in late position either.
If you tighten down COs range then its hard for hero to be better than 33% in the center pot, which still gives him EV of ~90.

My range for SB was any ace, any broadway, any pair. (loose).
I think its all about aqo. If you put aqo into COs range then its a about an even bet, and has a lot of variance against supposedly weaker players.