I've considered all sorts! Catch 22 unfortunately. I already accept I'm not going to have great results from this grow. I can't afford an led this month. If I chuck what cash I do have at extra cfls it takes away what I can spend later on, not to mention the electric bill.
I've got the bulb in the best position I can for the time being. Hoping the Roadrunner will fill out a bit then move things around a bit again.
I've not actually measured by roughly 50cm wide, 80cm deep, 2 meters tall although I have my top reflector covering the whole top area about 1m up.