I got mine today and it also looks pretty nice. But beware of the added weight of a gas engine and associated accessories. This plane, at 12 pounds, already has a wing loading above 35 oz/sq ft. That's probably a typical flying weight with a 120 four cycle that usually weigh in the 2 pound range. The smallest gas engine you might want to try is an RCS 140, bu that one is close to 3 pounds RTF. Something like a Zenoah G-26 is closer to 4 pounds.

Just try to keep it light...

I have a Saito 150 on the shelf that may get used on my project plane