The only concern as to buying a certain camo (for the Manitoba Airsoft Association) is that you'll end up playing on the side of whichever team uses that pattern. Multicam would usually hook you up with Manitoba Rangers. Cadpat would partner you with Ortona, Hellfish use M90 or tiger stripe etc etc. Join the MAA forum, ask what teams use what camo and take it from there. Or, just get whatever you like and nevermind who you'll be with/against.

Depending upon your size, I could sell you Cadpat BDUs and a vest that I never wear. Think I have a boonie too.