Here is my list of a well rouned arsneal:
.22 caliber semi-auto for plinking and target work
.22 caliber revolver, possibly a S&W 4" barrel "Kit Gun" for a woods/boat gun
.38 caliber snub nose, S&W 36, 642, Colt Dick Special for a CCW piece
.357 magnum 6" barrel for long range target work, hunting, etc.
.45 ACP 1911A1 [barrel length of your choice] for duty weapon
AR (your choice of manufactuer) in 5.56/.223 for SHTF scenario
.22-250 for varmints, over long range (bolt action, only)
.308 bolt action for most deer sized game
.300 Weatherby magnum for extremely long range/dangerous game hunts
12 gague riot pump shotgun (again, your choice) for home defense
12 gague SBE 26" barrel for birds, ducks, etc.
Lots of ammo for all of the above~!