Here is what I'd do, get 2 27K CFL's and 2 64K CFL's and 4 of the green outdoor floodlight bases, you'll probably find them in a box near the extension cords and 4 2-3 gallon pots for plants. Get enough soil to fill your new pots. Something with not too many wood chips and more sand and/or perlite in it. Cut about 1.5 inches off of the flood light bases where you screw the bulbs into. It's plastic so shouldn't be too difficult. Suspend your light basses and lights over each plant. Secure but alow for raising and lowering them. Transplant your beasties into the larger pots, water, no food for at least 2 more weeks, Leave your existing floros in there, wont hurt. Veg for 3-4 more weeks or till they get from a foot to 18 inches tall, and switch to flowering (12hrs on 12hrs off) for the rest of the grow. Since you have them in MG soil, I wouldn't add any Nitrogen for vegging, and just before i switched to flowering I'd flush the soil with about 6 gallons of water and start with the bloom food. High P and K (phosphorus, and potassium). Get some litmus paper for checking the soil PH and your water. Keep it as neutral as possible. Now your lights will run ya about 12 or so dollars, and the outdoor green flood bases will run 3 dollars each. For about 12 bucks you'll have lights necessary to finish them. Wont be a large harvest but good enuf to test your growing skills, and improve them as you see fit. Not sure on the soil and Walmart but your pots will be about 2 bucks each. This is as ghetto as i'd go on a tight budget. Luck wit dem beasties. Oh, and watch them as you flower, you'll want to remove any males you find. Just get them out pull em up or whatever, You could let them grow up in another room and make butter or oil out of them. Just get them away from the ladies.
Nim