5 ought to get it done but leaves no room for fun.
If I had to be restricted….
357 revolver or 9mm auto (357 Blackhawk)
17hmr for hunting or 22 for plinking (suppressed 17HMR)
6.5-308 general purpose rifle (6.5 Grendel)
300-375 large rifle (35 Whelen)
Shotgun of choice (16 ga Ithaca)
