So you would need 6.2 married people to go in on it to be legal. That doesn't seem bad. Although you didn't brew it at home so it may not be cosidered home brew and goverened the same way. I don't think there is a law saying you can't have 1200 gals. of beer in your home.
Or on the other hand if one were to want to start a brewery without the high cost of start up that seems like a good option.