Well I finally just about got it done and it's time to balance it. I have a OS 108 for power and I tried balancing it at the 152mm and to get it about 160 mm I have to add 2 - 1800 5cell batteries to the fire wall, about 1.3 pounds worth, plus add the reciever to the front some how.

Does this sound about right or how far back can I go with the CG?

FYI, right now with out the balast it weighs 10# 10 oz.