Good luck, great airframe, scratch that, fantastic airframe.
Presumably you have flown a Pitts before. If not Eds advice is sound. I could not believe the recommended approach technique the first time I flew one. A gobsmacking earth hurtling constant curving sideslip. They fall out of the sky like streamlined bricks
A cub and tiger moth will not get you ready for the mighty Pitts. Get someone to show you the secret. Paul Ambrose at Popham does Pitts therapy without the swingeing ego reduction.