Well here are my firearms:
Sig Sauer P226R in 40SW
CZ P-01 in 9mm
Remington 597 in 22LR
Saiga in 223
AR-15 LMT Upper, Mega Lower, Magpul, VLTOR, etc in 223 / 5.56
AR-15 RRA VLTOR, MI in 9mm
AR-15 CMMG Upper, DS Lower in 223 / 5.56
So I think I need a 22LR pistol and a 1911. 45ACP seems to be the same cost as a 5.56mm these days so I didn't really find it justifiable to get 45ACP.
I was hoping to get a 1911 in either 9mm or 22LR. I was thinking of getting the Kimber Rimfire 1911 but it's less than half the weight of a real 1911 so I have my concerns on that.
I think in the end, I'll probably end up with some sort of Kimber and a 22LR kit.