ORIGINAL: nexxa

I run a APC 8X8 on a OS.32SX with tune pipe.
I want more pitch and less diameter, like a 7.5X9 or 7.75X9.

What is the better match. Buy a 8X9 prop and cut it to 7.75 or 7.5 or buy a 9X9 and cut it to 7.5 or 7.75?
Do I need to keep the same shape (thin tips) or just cut it straight and sand a bit?

If you have pictures of your custum prop.
Thanks