Ummm...Are you going to raise the plants to the light? If not, you'll have to lower the light(s) to be effective Are you planning on using the fridge lamp, or do you have other plans? I'm pretty sure the fridge light won't work.

Remember that the fridge is well insulated. You'll have to be pretty agressive venting-out any heat.

Not sure what growth technique I'd use, but likely I'd use the largest pot I could fit in there, (two if possible) and top it once. But then again...I don't scrog, either, lol.