AZDZ80 on a 26x12 MenzS-- Ionce checked with a spring scale -- this was 35 lbs at 6200 rpm.
Iwould -on a Hawker- put my time and money into a good internal tuned can and cooling ducts -and run a good flying prop -instead of going for a big dia prop
Actually you could use a 28x8 and that should haul your bird -Iguess it will be about 30 lbs or so ???--
You will gain static thrust with low pitch setups - get a big ol paddle blade -or make one .