Hey, I haven't done it, but I am looking into doing this trip this summer.
850 to 950 kms a day should be almost comfortably doable - 4 hours in the morning and 3.5 hours afternoon averaging 120km/h. I think the weather, finding places to stay, and the objective of the trip are going to be major factors in how long it takes.
I would do a smaller, one or two day trip with the gear you plan on bringing. That way you will be able to find out the fuel economy of your bike with the extra weight, how far you can comfortably ride in day and you will be able get a better idea of what you need to bring. Also go to a bookstore and look for a Canadian travel book like the rough guide to Canada, it has average precipitation, temperatures, blackfly seasons, campsites, maps, places to eat, phone numbers + costs for eating/staying, etc. which should help you plan out possible places to stop.
Things I'm thinking I will need to bring are:
Rain gear, a couple tarps, some tools(an upgrade of the tool kit that comes with the bike), spare key, air pump + tire plug kit, spare gas can(empty unless I know I will be going for a long stretch without gas stations-my gs500 seems to do around 280 kms before i need to switch to reserve), some tubing to siphon gas, chain wax, oil filter, oil, garbage bags to keep stuff dry, tent, sleeping bag, self-inflating mattress, rope, copies of important documents and numbers in case stuff gets stolen or lost, propane and single burner stove. I might just buy new clothes along the way and throw away the old ones to save space and time. This will probably change once I figure out how I'm going to attach it all to my bike.
What bike are you planning to use, are you staying in hotels or are you going to try and do the trip for cheap?
Cheers,
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