Anyone from San Diego?

I'm moving to San D after Kairi is born, and I need to know how my allowances pan out, and rules and regulations because I am so worried. 
My husband is military, so we get BAH. He wants to get a one bedroom apartment that costs $1500. That leaves us with $500 to pay for utilities. 
Will we be able to make it? 
Are we allowed to have us and a newborn in a one bedroom apartment?
I'm trying to figure out if it's possible, or if we need to live on base. 
Any advice at all could be useful.