Judging from your pics, I'd say a cock vane at 10 oclock would make sense with the marks showing on the rest. Straight up is the way to go with that rest from my experience. I would still get your cam timing and lean checked out though. Hopefully they'll know what to look for.

I wouldn't worry so much about speed as I would arrow flight. Shoot through some paper and see what they are doing. Get the left/right close(assuming your vanes are clearing) Then proceed to your walk-back tuning and make final adjustments. .

Dropping your armsometimes results from trying to watch your arrow. Don't do that. Focus on your target dot, relax and squeeze the trigger. Let the release fire with a suprise and hold your focus on that dot till the arrow hits. Your brain needs to be focused on that dot, not the pin, and definitely not looking for the arrow.

Sounds like it's coming together for you. HOpe you get it rollin!

Just out of curiosity....how tall are you ?