watch the weight but you're chucking a 4700mah in there lol...

Why do you say that by the way? Just from a cursory glance it seems quite light for the wing area, shouldn't suffer too much from a little extra weight as long as CofG is maintained and there's extra power to accomodate it. Of course out of the two of us you are the one who has flown it, so i'm interested in your reasoning.