I was given an old balsa/ plywood kit half built that intend to finish and fly. It requires a .19 to .45 nitro 2 cycle but I'd like to make it electric. Does anyone know how to convert this to a comparable electric motor. Finished weight is supposed to be around 5 lbs. I think the batteries will likely add more weight than a full fuel tank so I'm thinking that I should aim at the high end of the scale. Any help will be appreciated! The kit is a Goldberg Eagle 2.