I want to build an ultimate 1000 yard hunting rifle for elk and everything else in AZ.
"Ultimate" is a tall order as some of the guys in this forum have gear totalling more than my first house.
But, here's my abbreviated response...
If the Vangard shoots sub-MOA, it should be good enough for some long range Elk hunting.
I would expect the Savage LRH to perform even better.
I don't hunt Elk, but I see/here a lot of guys using 7mm Rem Mag very successfully with the right ammo. You might try HSM ammo with the 168 Bergers.
300 Win Mag or 300 WSM would probably be your next step up to give a little cushion. But, any of those will work if you place your bullet through the vitals which is easier to do on paper than in the field.
I think Huskemaw is great. There may be others you should look at before deciding such as Nikon, Sightron, and Vortex for mid-price, decent glass, and repeatable turrets. If you want ultimate, then you need to look at high end Leupold and Vortex models, as well as Nightforce, and Schmidt-Bender.
Save money for a good range finder such as the Leica CRF or perhaps even Swarovski. ...and, accessories bipod, backpack, windmeter, ammo, range fees. ...and, a good sharp knife.