First, let me say probrewer.com is a better resource to ask this.
As for your question though, you would clear $33,600 per month @ $7 per bottle. You then have to pay on the loan you took for the brewey and the space. Then there's utilities, licensing and taxes for basic overhead. Not including any money for you.
Next each batch has associated costs (i.e. water for brewing & cleaning, fuel costs to heat everything, ingredients, labeling, and most expensively, bottles & corks).
This all assumes you're even allowed to self-distribute in your state, which is a big assumption. You won't get $7 per bottle if you cannot sell directly to the public.
Financial arguments aside. To get 32 bbls per month with the setup you describe, you would need to brew 4 bbls per day for 8 days out of the month. These will be a minimum of 10 hour days and up to 16 or so if something goes wrong. On non-brew days, you would be cleaning, bottling, labeling, etc. So a 10 hour day is probably the norm. If doing 70 hours of work a week doesn't sound fun, then you need to factor in the cost of hiring someone to help out. Hopefully you get a totally honest, self motivated employee who needs litterally no direction from you, because otherwise, you'll still put in 60 hours a week.
So I guess what I'm saying is, Good Luck!