You're correct, CKVR should be easy to receive... if it's on the air. A simple
indoor antenna aimed ESE should be enough antenna.
The digital signals south of you would require a large antenna such as the Winegard HD7698P and a good low noise preamp such as the Antennas Direct CPA-19. Outdoor, roof top mounting will be needed. Indoor or attic mounting will leave the antenna with little signal to intercept.
It would be worth your time to inquire at digitalhome.ca to get the latest information regarding what analog signals are expected to remain on the air. TV Fool is depending on Canadian government information that seems to be slow to update.
If you find there are analog signals on real channel 2 through 6 that interest you, I would amend my antenna recommendation to an all-channel design. You may also need a rotator.