Is there a reason you wouldn't consider the UK tickets? I don't know your dates so can't really compare, and you'd need to check the exchange rate but they do offer 7 day tickets (and they are all park hoppers and come with memory maker)
https://www.attractiontickets.com/e.../walt-disney-world-resort/disney-7-day-ticket Just a thought any way
If I look at 7 day tickets starting Dec 20 -
Disney is $803.49 USD = $1085.50 CAD
UK tickets $585 GBP = $961.23 CAD
Now mind you, you could use Disney GC's to convert that and not have to pay anything additional on top of the exchange rate like you do with a credit card. You'd probably add 3% if you use a CC to the total so $979 CAD for those UK tickets with that added on. I included the $10 per ticket that makes them refundable. Any way! Check your dates.