I have only used Magnum 2 strokes before an have no experience with the 4 cycle models. However it is within the manufacturers engine range so should be ok. Just build as light as you can to keep the wing loading down.

I plan on using a Saito 125 in mine, more because I can also use that engine in other models that I own or plan to soon, than because of any need to power the extra to the max.