I'm joining the National Guard and will be going to AIT pretty soon....?

I know when I go to school I will be getting paid as active duty but can someone explain to me what pay I will be receiving? I'm married with a kid and live in FL. My school will be in GA and its 26-27 weeks long. I pay a mortgage on the house in FL, so will I receive BAH and BAS on top of my base pay? Will I be able to live off base when I get to GA or will I be in the barracks? And by the way I'm going for 25S Mos. I'm prior service Marine and got out as E4 in 2007. Thanks.