Hi AZtwins. greetings from Tucson. That's sure a fine ram in your avatar.
Are you looking to buy a factory rifle or are you going to build it? Mine is a 35 Whelen AI on a commercial LR 98 Husqvarna action, 23" barrel, old McMillan fiberglass stock, and a 1.5x5 Vari-X III. I wouldn't change a thing. (except I am going to give it an English walnut stock after this hunting season is over that will add a pound to the weight - at 7.6 pounds full up now, it really gives a beating off the bench).
I have been doing some work with Power Pro 2000-MR powder lately and it really takes the Whelen up a notch in performance (not that it needs it!) I am kind of blogging the weekly range results in another thread here and on the Shooter's Forum.
If you are not planning to shoot >250 grains I'd sure go with the Whelen - regular or AI, as you like. Here are a couple of the 2000-MR loads and results.
Best of luck!
Rex

Attached Images
35 WAI 250 Part 65 2000-MRc.JPG (18.46 KB, 620 downloads)
225 NAB 69 2000-MR 20190718c.JPG (21.84 KB, 614 downloads)