Hope it works out well and it likely will. My only experience with a conversion was on a heavy plane for a conversion at around 12.3 pounds, a Phaeton 90. It flew scale like and was a delight on take offs and landings. The engine was 100 percent reliable, can't recall it ever hiccup except at the end when the ignition unit failed and it wouldn't start, but it gracefully did that in its sleep so posed no threat to the plane. It would pull a loop if some speed was gained going down hill and the loop not too big. It was a pleasure to fly although the aerobatic potentials only came alive after replacing with a Zenoah G-20 after the ignition failed.

Good luck with the project.