That's how I first started, I planned on getting one folder for EDC(Para 1), one SAK for the woods (pionner/Harvester- wood saw, harvester blade, wood awl) one for EDC (Supertinker- scissors, can/bottle opener, screw drivers) one medium fixed blade for camping (Bravo-1) and one big chopper for camping (ESEE Junglas).
Well after several weeks of reading reviews and learning about steels I decided a Para 1 would be my EDC blade, but then I also wanted the Delica in ZDP-189 for edge holding, and an H1 salt for swimming, something else as a work knife, then I found out about sprints and it went down hill from there. So I'm attempting the same thing with guns, hopefully it goes better, my plan:
CCW: Kahr CW9
9mm Pistol: Sig P226 (picking it up in a week)
.45acp Pistol: Springfield XD Tactical, May switch to H&K USP or HK45
Shotgun: Mossberg 930 SPX
AR-15: Will probably build one
AK-47: Mak-90
.22 Plinker: Ruger 10/22
Hunting Rifle: Tikka in .308
and that's it, I'm done, if I get another 9mm I'll decide which I like better and sell it... that's the plan anyway (although the CZ 75 SP-01 and Glock 17 are tempting me), and I keep coming up with new categories, instead of just shotgun Semi-auto and pump, originally AK-47 and AR-15 was just one category.