i had the same situation last year in my old house,i hardly had any room to work with. I stuck to doing a sog(sea of green) i bought some Big Bud seeds,vegged them for 16 days under cfls then flowered them at 5 inches tall.I ended up with 8 rather squat and bushy plants that yielded almost 1 ounce per plant dry.If you are short on space but want a decent yield go with a strain that is known for large nugs i.e mango,big bud,critical mass there are a few out there.Just because a plant is flowered whilst small as long as you have cfls that shroud the plants you will get a relatively good amount.Cfls cant penetrate foliage that well if a plant is vegged for too long and has too many leaves.Plenty of cfls,large yielding strain=surprisingly decent amount of smoke.Good luck and peace.