Juan

I would go for the .458 LOTT
You could make your 458 win mag into a LOTT.
When I come in March you can try the .500 Jeffery all you want I will bring plenty of ammo

The recoil is not bad and the .505 Gibbs is the same.
With your size the big bore should be no problem. If ypou get hooked then get one Jeffery or Gibbs either will do.

Cheers,

André