first thing needed, is what size prop will it turn, at how many rpm, and how many cells, and what estimated amps? I know this sounds silly, but if you can figure out the rpm and size of the prop with the glo motor, overall weight, then convert it to electric power, it will work fine... a 12X10 prop at 7000rpm on a 4 pound model doesn't care what the fuel is.....surprisingly, you will be amazed at how little wattage is really required for beginning pattern...I fly a Venus on 3S lithiums, and while not overpowered, has way more than required for intermediate routine. Just be careful you don't " cross the line" into 3D power land........you don't need it for pattern.
just my humble opinion after having flown exclusively electric for the past dozen years or so.