Unfortunately, it's impossible to say how many staff are specifically dedicated to the commerce stream at a college without contacting the college directly.  Staff numbers can fluctuate and there might be faculty who teach across streams.

However, most colleges offering commerce programs will have professors specializing in accounting, economics, business studies, and other commerce-related subjects.

Regarding honours subjects, yes, many colleges do offer honours programs in commerce. These programs allow for deeper specialization within a specific area of commerce, like accounting, finance, or marketing. You'd need to check with the specific college you're interested in to see if they offer honours programs and what specializations are available.