Size and weight would be a big help, as would finding out what size nitro engine it used to fly on.
These conversions generally need a bit of work. You need to think on how you get the battery in and out for charging. You don't really want to have to take the wing off every time to do this, and the battery will need to be retained somehow to stop it moving around in flight.
And by the way... this model is not well suited for a beginner. It may be tough but even tough planes will break if you crash hard enough and often enough. Trying to fly an aerobatic model such as this with no experience pretty much guarantees you will crash constantly.