Hello!
When I designed the 3-blade scale prop I had as a goal the same or slightly less rpm as the OS .FS 26 delivered with a APC 10x5 two blade prop....which was around 10000rpm using 15% Motul "micro" all synthetic oil and 5% nitro.

Luckily after having worked hard for several months with the mold making, the 3-blade 10x5 prop turned around 9200-9600 on the same fuel as mentioned above.
I haven't measured static thrust as it doesn't say so much about how the model will behave in the air but standing behind the engine when it turned the prop felt good as much air was pushed backward.
So I just hope the 3-blade prop will work.

Regards!
Jan K