Why complicate things? Full flying stabs exist on tons of jets and there are servos out there that have existed for decades that are more than capable. The firebird at 300mph doesn't need more than a 400oz servo to power its stab and that is both halves on one servo! In your avonds F14 that added gear takes up precious space which you'll already be tight on.
Between this, wanting to make the spoilers functional on your wings, wanting to have radio programming that can sweep your wings at a certain speed etc I think you're way over complicating an already complicated and heavily loaded model.

I would keep it simple and light. If you haven't flown jets before I also would not suggest you start with this as a first jet no matter what your past experience is.

Just my opinion.