Check out this link. I use a similiar set-up in a storage closet just off my balcony. I too live in a small 2 bedroom condo so I don't have much space to work with. I have a 600w instead of the 400w shown with this kit.

High Tech Garden Supply

Yield is a relative question. What do you plan on using for seeds? Bagseed? I have grown some bagseed and had ~1oz per plant, I have used other bagseed and gotten much less.