Any old trickle charger won't do. It needs to be a battery maintainer, similar to Battery Tender or Optimate, and some others. But otherwise you are on the ball. Do cover the bike, and park it on hard surface if possible. Start the bike twice a month and run it up to full operating temperature. That will keep the fuel treatment all spread around and working good...Plus it'll make the bike feel like it hasn't been ignored for four months! Or more...depending on what winter brings this time around. You can put it on the stand if you are worried about the tires flatspotting, but do check pressures when time to ride. Being off the ground won't keep them from losing a significant bit of air. Oh the battery should not freeze while on the maintainer, but Canada cold is a cold that us in the states would not soon forget....I would check it after real cold spells just to be sure. It won't hurt to pull the battery, and bring it and maintainer inside. But do hook it up and keep it connected.