If you wanted an objective opinion as to what you should do, this isn't the place to ask for it
Biased? This forum? Naw!
Any plane can be converted these days. It's just a matter of money. What you need to provide is the specifics on the airplane, such as a firm weight estimate, and some dimensions to give us an idea of the overall size of the airplane. Also, what kind of flying you plan on doing, and how long you'd like to do it (i.e. flight duration) will be helpful.
FWIW, this plane sounds like a real porker.
High wing loadings require high power loadings and expensive lithium polymer packs to keep the weight from getting totally out of hand. It won't be cheap, that's for sure, but neither is a Saito 100.