Nice man, this cabinet reminds me of mine. Mine is a bit smaller, 24" wide and only 15" deep, but it is 6 feet tall so I think i'm going to half it and have a clone/mother chamber on top and flowering chamber on bottom.
I've got a 250w HPS for flowering now and do 4 15-20" plants and pull about 3-4 oz's every 3 months. I'm thinking about going true SOG and doing up to 15 or so plants in my space and I think I can actually pull more if done right (testing it right now). You might wanna think about doing something like that, just a thought.
I tried to post a few pics of my cabinet but could only post this 1, so take a look.