I have two questions inregard to the family visit visa. My wife is a Pakistani citizen, and lives in Pakistan. Would I then be able to apply for the family visit visa?
My second question is would my 1st wife be able to come on a family visit visa as well since we are married, and I would be living in Pakistan with my 2nd wife?
You haven't mentioned if you have a work visa in Bahrain or not.  If you have a work visa and salary above 400 BD, you can sponsor ONE wife with attested marriage certificate for a resident visa. The second wife can come on a visit visa if she is eligible to get it on e-visa site or if your employer is willing to sponsor for a family visit visa.