Look around the swapshop and ebay and see if you can find an UltraRc Katana extreme. they went out of business and are selling off their remaining stock on ebay and they can usually be had for about 200$. I had one and it flew like a foamie. It has a 72" wingspan and with an OS 160 it came out under 9 pounds with no mods. it would be perfect for an electric conversion.