Good suggestions I'm not to worried about the weight as I recall we flew the taurus in the 6.5lb range and it handled very well I think it would do fine at 7.5lbs. I flew mine mostly with a piped 60 way over powered I also used a piped YS 45 which in my opion was the best power plant so electric that can swing a 12x9 say at 10-11K would work out very nice. I do have about 100 1100 mah A123"s looking for a home, they might just be the ticket I could charge right in the plane.