I started in a similar fashion I think you're talking about.. now I use the same layout for clone and veg.
The two pics below are of a 2' x 4' (7' height) tent. Bought a height adjustable folding utility table for around $35 on Amazon. AWESOME weight rating, very sturdy, cleans up quick and easy too. Used some heavy duty drywall anchors laying around here to mount a 4' 216 watt T5 to the hollow plastic table underside.
This approach is decent especially if you've already got the tent, and you're not already suffering from ventilation issues.. depending on how you've your ventilation running, adding the table (without alteration) like this will almost certainly force you to rethink it's layout.. but since it's such a small space, it's not tough to work out.