AKo vs nit

MDK is running 20/3/45 over 60 hands.
He is UTG and limps. There are many limpers and I raise to 6BB's. He then raises to 60BB's. We are both rather deep. I have about 200BB's and he has 150ish, so this is almost half his stack. I probably should have raised more preflop, However, I think the result will be the same here. This table is all limpers. Min raising on this table is like raising 5xBB. I think that calling here is wrong, shove or fold?


Everleaf Gaming Game #244475808
***** Hand history for game #244475808 *****
Blinds $0.02/$0.04 NL Hold'em - 2011/02/23 - 09:06:59
Table Central Park XV
Seat 9 is the button
Total number of players: 10
Seat 1: vojaksvejk ( $ 4 USD )
Seat 2: amatar ( $ 7.53 USD )
Seat 3: MDKILLER69 ( $ 6.38 USD )
Seat 4: Morozov ( $ 4 USD )
Seat 5: AKERA ( $ 2.86 USD )
Seat 6: igori1978 ( $ 2 USD )
Seat 7: Hero ( $ 8.19 USD )
Seat 8: Panagiotis1 ( $ 3.62 USD )
Seat 9: Tomik777 ( $ 3.71 USD )
Seat 10: Scatina ( $ 1 USD )
Scatina: posts small blind [$ 0.02 USD]
vojaksvejk: posts big blind [$ 0.04 USD]
** Dealing down cards **
Dealt to Hero [ , ]
amatar folds
MDKILLER69 calls [$ 0.04 USD]
Morozov calls [$ 0.04 USD]
AKERA calls [$ 0.04 USD]
Hero raises [$ 0.25 USD]
Panagiotis1 folds
Tomik777 folds
Scatina folds
vojaksvejk calls [$ 0.21 USD]
MDKILLER69 raises [$ 2.26 USD]
Morozov folds
AKERA folds
Hero??
vojaksvejk folds


I put him on {QQ+,AKs} I feel at best I am coinflipping with QQ if I shove.