Might as well do the black badge. its recognized for basically all the other sports. IPSC only recognizes BB, nothing else is good enough.
CDP/ODPL is basically only good for ODPL (but Team Hoser runs great multi gun matches at Guelph)
PPC is as far as I know only good for PPC and could be range specific.
CAS/SASS dosn't have a formal qual.
TDSA holster qual is good for at least some of the ranges TDSA has classes at and is now recognized by ODPL (to the best of my knowledge)
I think you could also get you IDPA NSO and have that count for IDPA but there's not many IDPA clubs in SW ONT.
This is of course my opinion and understanding of the current situation across multiple quals and disciplines. Seriously though just do the BB, its gonna cover everything else.
D!NK