what i would do is a 4 plant scrog or something like it. If you dont know what a scrog is type it in the search box and youll find a few on here. In a scrog you can pre-determine the height of the canopy. So you grow the plants upto the screen and then under the screen tying the budspots to the wire. you could easily make a scrog work in 2 feet of height and for the light id say 400w hps, dual spectrum so you can veg with it. Install a diy cooltube with a powerful fan on it and get a 100/120 cfm fan to bring air in.

Or if you dont want the fuss try low stress training which would require less work.
Good luck