We have been to 34 np. Yellowstone is#1,, you can also drop into Teton np, head west and do the 5 in Utah, or head east and do sw south Dakota. Stop at the Irma in Cody.
I have many pre64 mod. 70 calibers. Bought a 6.5 prc last summer for a sheep hunt, love it. Wanted a 7prc for elk, then realized outside ca. I can go from a 127 copper to a 147 lead with the 6.5prc. Good enuff for elk. Saved me 2k.
done it all except complete my slam, so thats my main focus. passed many dall, which i now should not have. killed a desert, now in 17 draws for rocky this year. stone will be pricey. Mt. Goat as well.