Hi!
A plastic prop doesn't give any better "balance" than anyother prop, wood or glassfiber/Carbon...what it makes is better fly wheel effect.

For a high winged trainer flying at sea level it is my personal experience from many years flying and training people that a 11x5 or 11x6 APC is the best size/prop for that engine and plane and not a 10x6...and definitely stay away from black MA props those are the worst props there is.


Regards!
Jan K
Sweden