Trust me... there are options!!.. but you need to explore. Canada hides so so many information on the cic website and then there are some ... like flagpoling that you will never find on the web... you only need to explore!That's a nice route. Looks like so many options available...
Ontario's motto is "yours to discover".... but another thing is... they will do exactly what is programmed/written on the website... when you discover and it looks too good or easy to be true... my take; don't doubt it... go for it!
Inlanders.... if you have a valid permit; you will not need a valid TRV (visa sticker) to return to Canada if you ONLY visit the USA or St. Pierre or Miquelon.