Well for the CG, I fly in my backyard, just hovers and harriers, and fly sometimes with the TP 1320s and I havn't really noticed a difference at all. Although when pushing inverted stunts and waterfalls ect, there you might feel something. I am using 3 different packs for this plane, and the PA 1000 mah battery is a perfect fit for the plane. I also use the 1320 and the other ones are the new gen 3 batterys, they are the lipower lites 950 3c. Although they are almost as heavy as the 1320's. Oh well at least they keep me flying!
Oh by the way, I also ran the axi 2212\26 on this plane, a little heavier motor but I haven't felt a change in the CG.
I'll a be also testing the E-flite 400 740kv for those of you that will be thinking of using that motor.
Thanks
LeBlanc