IrregularPulse may have hit the nail on the head and said some things that others of us might have been thinking. We all have visions of grandeur at times and thats just fine. Coming up with labels for homebrew are just fine too (though, as he said, the beer is the more important thing) and if you enjoy coming up with them, get to it - have fun with it, don't stress.
But the commercial side of brewing is a whole different ball game and honestly, coming from a Graphic Designer, if you ARE a commercial business, the best thing to do may be to hire a designer and have professional logo/labels produced.
At any rate, this book linked below is a good read and can put the costs into prospective (just remember those were costs years ago - imagine what they could be now).
It's written by the founders of Brooklyn Brewery.
Oh, and by the way, you may not have looked into this, but (at least in jersey) you need a brewery license just to make the beer commercially which I heard will run you like $10,000 and than another license to distribute which is multitudes more - not sure how it works in DC though.