I think that with the exception of the AFS the Nexstar should be flown factory stock for the first few flights. After that, the gimmicks (as I call them) can be weaned off, remembering the pitch changes you will encounter when they are removed. ALWAYS have an instructor test fly after removing a "gimmick" device as the handling will change. I personally believe the AFS teaches bad habits IMHO, please no aguments I know not all agree on this. I don't like a stabilizer that wants to fight me for control.

Goog luck