@Frank Nitty
Mate your going to struggle to grow with any light bar cfl/t5 (because they can grow bonsai weed) in a 3ft high tent.
Please don't take that as me suggesting cfl lighting though.
2x2x3 tents are really only for cloning.
I would try for 5ft height or minimum 4ft.
You have to figure in your pot height, then some stem, then some canopy, then a gap to the lighting, then a gap above the lighting.. Filters? circulation fans? ect..
Don't jump in spending money until your sure your plan will work. Because there's nothing worse than trying to grow in a tight space and failing after spending your budget.
It isn't impossible to grow in 3ft but its not easy, if it can be avoided then it should be.