@L16pilot, congratulations on your maiden. Hope mine maiden will be soon.
where did you set up CG?

@rbean, can you tell me your CG

As for all others, I have decided wich prop to use. As a matter of fact wich two props.
Today I have measured one more and here are results:

Graupner sonic 18 - 6,- 9000 revs and 15.5 lb of thrust.

So I will be using first two from table