Well, my advice for what it's worth .......
Depends where you go in Canada ..... but if you wanna fly in the UK, why not learn in the UK ? I would heartily recommend Marilynn at
Caledonian Seaplanes - I did about 7 hrs in Canada (but got to go solo at the end .. although I think that is no longer permitted

), then came back and at a genteel pace finished off the UK rating at Loch Earn (allow 6 hrs or so).
But what do you want to do after that ? If you just want to try it out, then fine. Marilynn gives excellent instruction in mountain flying as well, but you won't be able to go solo ....
However
Yours truly has got a syndicate together (shares are available). Plan is (for next year) to base an amphib in the Glasgow area. Buy a share and after some suitable extra experience and checkout you could be piloting your own seaplane to lovely remote lochs for picnic and fun...... PM me if you are interested.