AK in the blinds

[technologic]

when there are many limpers and you have AK in a blind position, do you raise this hand, and if so how much do you raise it? i usually go for a check/fold line if i miss, but i feel that this is way too weak and is a big leak in my game.

if you raise, and there are several callers, what are your plans post flop?

also, what adjustments do you make if the AK is suited, or instead, you hold something like AQ or JJ?