Minch since you are investing a fair bit of hard earned in a nice airplane have you considered going the Weatronic route? I have had one in my 339 for a year now, it negates power boxes and matchboxes, I have been using 2500 lipos and have had good results. I now have a Dual in my Ultra Bandit and because the larger airframe permits it I have one 2500 #2 battery and a huge 5000 as #1 flew the whole weekend at Coningsby on one charge! True its a diffent case but the Ultra has 8611s on all control surfaces, see you at Abingdon?

m