ORIGINAL: mambarider
The 55ax is big for this plane. The 46 is at the top of the engine range. Put it back in and check the cg.
I flew one with the evolution trainer engine, apc 10x7 turning 13,000 and it flew very well. It is kind of a speed plane.
As for landing it will land a bit hot as compared to a first trainer. What worked for me was to get it a little lower at the far end of the runway and have a shollower glide path coming in. Don't expect to chop the throttle and just drop it in. It is a easy plane to land. I thought it was easier than my alpha just a bit different.
The 55 is just fine, especially since it is a race plane. The 55 is the same physical size on the outside and if it is heavier, its such a small amount that it doesn't matter. I doubt the idle thrust of a bigger prop could even be a measurable difference either.