Please let me rephrase: based on weight of the engine, which engine is better suited to the Bipe? Does anyone have this experience? My Babe Bee is dual ported with polished killer crank and turns 17000. I know a trick to let them run inverted. The gold bee has the same set up and rpm. I usually use Merlin or Nelson plugs on my Coxes.
So it sounds like your question is mostly concerning cg then?
I'd so, and you have both engines, it would make sense to me to try the golden bee first and see how the cg feels in flight. If it feels too forward with the Golden Bee, then switching to your hopped up baby bee makes sense.
The other order of engine/flight testing seems slightly more risky to me.
Goodluck, the plane looks nice.