RE: Getting the most speed out of my bow.
BS,
I would have to guess at arrow speed not knowing the total weight of the arrow. You probably are around the 280fps mark. That is plenty fast if you ask me.
I would not do anything drastic or you may be affecting your forgivness, thus degrading some accuracy. If you shoot a fixed blade broadhead they can get squirrely as you get closer to 300fps.
The blazers are a good choice because they do not degrade down range speed like 4 or 5 inch vanes. Less drag.
You have your bow cranked and are shooting carbons. The only suggestion I would make if any, is to switch to an arrow that is in the 8-9 grains per inch instead of the 10-11 range. Thats if you are not there already. You will still have lots of kinetic energy w/ that set up.
Looking at a Ke chart , with a 450 grain arrow @ 270fps, the Ke generated is 72.86 DFP. Thats a TON, you could knock down an elephant with that. I believe you are there already.