OK, best hoverbatic prop for a .46 is a 12x4 Xoar or 12.25x3.75 APC
Now, anything below a Saito .72 is not going to be enough for a 40 size Mojo. I fly mine with the .82 and love it. Anything below a Saito .91 is going to be too small for the 60 size Mojo. I fly mine with a 100 and love it although there are some that are using a 125 with good results flying the Moass version.