Hell yeah you can grow in there.. You could grow a single tree under a single HID lamp or multiple CFL bulbs.. if you wanted to get creative, you could divide the height in half and grow two 3 footers in each space. I say 3 foot because you'll need the extra foot for the pot and lights, etc. ~Experimentalist
^^ Yeah and then just use their idea's and concept towards your own customized cab for your dimensions!
I could help you out if I knew the third dimension... you only gave two measurements. Is it a 26"x26"x96" area or what? 26"x??"x96"...