As for me, I'd get the chambering that you'd be sure not to find.
A 450/400 3 inch. You get a nice long .408 caliber, 400 grain bullet that penetrates very well. You have a more versatile double rifle that you can hunt more with. Regulated at a 60 Cord equivalent it gives you 2150 FPS.
Recoil is substantially less than a 470.

A rifle you can hunt Impala, Deer, Kudu, Warthogs, and still have enough gun to swat the big stuff with. And Butch will build ya one too!

Just my opine.