The Kadet is a wonderful airplane no doubt. Literally tens of thousands built and flown by guys will all levels of experience. Unfortunately it may be a bit much for a first time builder to convert to electric power. Not only must he figure out the correct motor/ESC but he will need to modify the fuselage to have a battery access hatch and cooling air intake and exit. I know that Sig has plans to update many kits to be built as IC or electric power but I don't think this has been done yet. A call to Sig would clairify that. Perhaps better to search out an airplane kit that is already set up for electric power then to attempt kit modifications on a first build.