Colin, The Os 1.40 will do anything you want with the plane. It will pull vertical from a hover with power to spare.
I am using a repitched APC 15.75 x 13 three blade. Repitched to 10
The final weight with the carbon fiber canopy is 9.5 lb.
Fuel to do masters may require a 20 oz fuel tank.
I have flown the plane 20 or so flights and have only need to mix the rudder to up elevator. Also a slight amount of down elevator to Throttle back For improved down lines.

You will need an extra high rise header from Karl Mueller tto clear the firewall.

Carl