For timing I think it depends on if you plan on going with a custom piece or not. Mine ended up being custom made, I believe we gave them the go ahead in November to start making it and we took it home with us sometime in December (We are getting married in Feb) so we had lots of time. Keep in mind if you decided to get married in Canada before you leave you will need the rings for that also. My fiances wedding band we ordered directly from the store and just had to be sent for sizing so we got that back within 2 weeks.