AK after limper in 3r

[jtown1010]

There's a lot of factors I would take into consideration before I did anything fancy, would the button shove most of his hands if you limp? Will the big stack BB call/re-raise most 2-3X LP raises? Will the limper call a lot of LP raises? Without any decent reads I'd probably just 2.5X then re-evaluate on the flop.