I would add something like a 12 or 16 with a 7x65r or 303 combination gun. 16/7x65r over and under is more continental in style, a 12 / 303 side by side more British.

It would be pretty much the perfect all round gun. The sort of thing to take on a trip alongside say a big double and you can shoot pretty much any deer / antelope but also with a shotgun in hand, duck, phaesant, guinea fowl etc.