Be careful. So far, every single thing I've seen involves removing weight from the front, and adding more to the back.
Your reinforcements to the rear former, and all the pushrod tabs...the extra weight in the tailcone. Seems minor, but it will take twice the amount of the tail heavy weight added to the nose to attain proper CG.
So, no...don't remove any of the stock servo tray

Looking good!
Paul