Here is the Canada Post website for postal rates.
https://www.canadapost.ca/cpotools/apps/far/business/findARate?execution=e1s1
If you want to use Flat Rate Shipping it should help you.
You can use K1A 0A6 as a handy postal code for National Rates. (It's the House of Commons in Ottawa).
For the USA I use 90210 as a sample zipcode.
You seem to be using Calculated Rates properly. Many newbies are baffled by those. Good work!
I would suggest not shipping internationally until you have at least 10 DSRs and know what DSRs are.
And never ship Surface. It's too expensive.
I wouldn't have choses tobacciana for the calendar.
There is Collectibles->Paper->Calendars-> Pre-1940 which might have been better.
But let it ride at the moment. I could be wrong for once.