From what I see you will need to pay attention to weight for an electric so start with a light plane. To me it looks like any of the electric setups being used competitively in pattern are close to the 1.70 ys in performance. If you consider takeoff weight they can be roughly equal in weight....or not if you consider you start at 11lbs w/ glo then add fuel.

Copy one of the setups on Chris's site, the AXI f3a and CC85 seem very common for an outrunner and not to pricey. I use the AXI f3a and Jeti 99 which works good and runs very cool.