In my area there is a community bike shop that, among other things, refurbs bikes to sell. they have a Cannondale M500, for $100. as far as i can tell, this is a great deal for a project bike to rebuild, but is it any good to be converted to an ebike? say a 500w or less motor, rear hub? I appreciate any advice. also, any suggestions for what i should be looking for, if this isn't it. thanks!