A friend of mine once told me you can never have too much power, he was hovering his plane on the prop at the time.
I went through your build and really like the mods you incorporated (thread bookmarked for future reference), the new tail feathers look great, and a two piece wing is a must on a plane this size.
Once I have the original plans complete I'll create a revised version. Hope you don't mind if I steal some of you ideas?
Alan