If you raise the blinds they will likely call because they were in to begin with. Wait until you see a flop with no A or K in it, then you should bet reguardless of what position you are in if it is just you and a tight player. They only thing they
might call you with is a pair of Js-As or better or a pocket pair that hits a set. Anything other than that then the pot's yours. You should wait until the flop though.