Can't tell for sure if that buck is a 3 or 4 point but he's a nice young buck. That country reminds me of Eastern OR where I hunted many years, there's nothing like the high desert with lots of rim rock, juniper trees and mule deer.
I've hoofed many miles in that type country and just like you if anyone got a buck we could get a vehicle to it or darned close to it so we didn't have to pack it out.
You've sure gotten your moneys worth from your GMC, that's great!