Sorry I read this too late, but, IMO, the Saito125 or ys110 would have been a better choice. This plane with a Saito 100 will be slower than the same plane with a 61 2s (eye witnessed).

I had the same experience with my h9 mustang. My friend with the 61 2s would spank my saito 100 powered. But I did win the cool factor (engine sound, his was pretty loud).