I've got a Balsa Products 1/2A Texaco Scale kit.

Specs.

Span 36"
Area 340 sq. in.

With Cox .049 Texaco engine, flying weight given as 16 ounces.

I'm hoping to electrify it keeping it down to 20 ounces or better using a geared motor and Nimh or Lipoly cells.

I've never done an electric before. I want the best power to weight. Has anyone done this kit? Any recommendations or advise?

I fly 1/2A glow, have lots of experience building light, straight and don't crash too often.