The setup I grew that in was a small cardboard box. 50cm deep x 40cm wide x 70cm high. Veg and first week flowering with a 23Watt 6500K CFL. Then I swapped it for a 48Watt 5000K CFL. For the last 3 weeks of flowering I added a second 48Watt 3000K CFL. So at any one time there were never more than 96Watts. Total yield bone dry was 2 ounces.
I switched to a simple homemade hydro setup after my first indoor soil grow. I found it was much easier and more rewarding.
I suggest finding some mylar to line all the surfaces. It will make a difference.
I'm working on a larger stealth cabinet at the moment and will post pics when it is done.