Its hard to argue with a thorn GI in a 4mm shaft. You can shoot and tune each actual broadhead/arrow combo with out ever dulling your blades. When it comes to hitting behind the pin there not a much better setup.
I have had great luck with the ELDM out of my 22 creed on coyotes. It seems to put them down hard. I dont get very many runners at all with that bullet.
That looks like an element with RKT cams on it. I shot a Carbon matrix for a few years and had nothing but good luck with it. I shot it about 72 pounds with a easton FMJ and nothing seemed to slow that setup down.
The Turbo LED makes all the difference. Here in PA its hard to shoot further then 400 with the trees and hills everywhere. TBH I could get away with goin back to the LR66's.
With you being from Arizona I would look at the PSE lineup. The newer limb design is really good. Also the Hoyts are known to hold together pretty well at 80 pounds.