mu2kan, you have too many doubts in this situation. It would really be best to clear them before plunging into the holy well of matrimony. No matter, how typical a Pakistani household is you really can talk to your mother about the things bothering you. I sure she’ll listen.
I thought the guy was here in Pakistan. If he is in States, can’t you hire someone to look him up for you? I don’t know how easy or difficult it is but if I had doubts in my mind about a guy I would definitely inquire.