You really need to set up a grow just like you do a fish tank. Set it up, get everything running and work out your heat issues (Yes you will probably have some heat issues at first). After it's going and everything's running smoothly, then, I repeat then, crack you some beans. Making a garden in a closet will have some difficulties, it's just the nature of what you're trying to do. Starting with beans, then them outgrowing everything I had was how I started. Lol, don't do that, you'll have enough to do, fix, redesign (think McGuiver at 2am) as it is. I wish you the best.