No you have it right. I only had said amount of space to build the cabinet in and I maximized the flower partition. That's the space I ended up with for mothers, clones will be above with a height of 26". I have found this fixture any thoughts:Maybe I misread your dimensions then. Are they length x width x height? If so, I'd try to make it long enough to fit a 4 foot t5 setup in there. You'd need about 24"x47" roughly for an 8 bulb T5.So it would need to be a bit wider than that. That light should have the footprint to cover you for 3-5 mothers.
http://www.aquabuys.com/p/WP01020.html
Then if that is sufficient, what bulbs do I load her with, haha "load her with". I guess I will probably have a similar set of questions for the light above the clones. I want to build a aero unit for that as well and lighting with a t5 too...
Thanks for your input, much appreciated!