I am new to all of this and the more I read about carbon arrows the more I am confused. I am not sure that I am shooting the right arrow or the one that was most convient for the shop.

I have aGuardian 70pound bow. Adjusted to about 65 pounds with a 28.5 draw and a current arrow length of 29.25 lenght

I am currently shooting the lt whitetail 65/80
I do not know the weight, spine or seight of my arrow tips.

I assume I would like to shoot around 100 grain tip as that seems what looks like a number of braodheads will weight and plan to shoot fixed blades as there does not seems to be a problem with hunting those anywhere.
Thanks for your help in advance.