Thanks. Yep, your right for the spinner, I broke it on the first Take off, I replace it temporally with this one.
I will try many props on it, 8X7, 8X8 and like you suggest 8.5X7. I'm sure, the 8.5X7 will give me unlimited vertical, very easy and strait take off, but I need to make some test.

To make a 8.5 X 7 . Do I need to cut a 9X7 or 10X7 prop to the right diameter? (APC prop).

I’m not sure for the prop tips. They are thin, do I need to shape my tips, or just cut square or with a small angle?