This is exactly why economics is known as the dismal science. Unlimited wants and limited resources just keep banging heads.

But, assuming an insanely rich uncle, here goes:

1. New .577 3" NE caliber Holland & Holland Royal double rifle.
2. New .470 NE caliber Westley Richards sidelock double rifle.
3. New .375 H&H Magnum caliber Hartmann & Weiss double square bridge magnum Mauser bolt action rifle with Talley QD mounted Schmidt & Bender Zenith 1.5-6 with Flash Dot reticle.
4. New .300 H&H Magnum caliber Hartmann & Weiss double square bridge magnum Mauser bolt action rifle with Talley QD mounted Schmidt & Bender Zenith 2.5-10 with No. 4 reticle.

Needless to say, all of the above would be bespoke.

Gotta stay with the classics and the best!