I'm not convinced that CNBG have the potential to outgrow northern strain. Faster growth, okay....larger? I'm not sure.
Same thing goes for Florida bass out of their native range or temp preferences. Both species come originally from peninsular Florida.
From my experience you're better off using a species or strain that is native to your region.
However you'd be surprised how many bluegills, bass, redears, and hybrids are shipped to the north from the big fish farms in Arkansas and Alabama. They aren't coppernose or Florida strain bass, but I know one supplier up here that makes dozens of trips down there to pick them up as it's more profitable to buy them wholesale than to produce them locally.
