Hi All I have a query regarding prop selection for an ASP 75

It has a 13x6 Master Airscrew on it atm but the guys feel it may benifit from a 14inch prop

It is currently fitted to a stand off scale T6 Texan of 1.93m span and an all up weight of just under 4kg

This plane is fitted with a lifting tail(on engine run it lifts alright [8D] ) flaps ailierons and fixed u/carriage and a custom exauhst

Any help with prop selection is appreciated as 14" props are expensive and hard to get in Australia.

Thanks in advance.