RE: TOC1 30% Yak 54???
Gibbs.
There is an other forum here on RCU that is called IMAC. (it is listed a bit above the pattern section)
IMAC is for "scale" aerobatic models that are made to fly like real aerobatic planes.
Several different programs are flown, with increasing difficulties.
Your plane/engine is more suited for that type of flying, and also complies with those rules.
Magne