If you have a prepayment code for TurboTax Standard, you can use that to pay for your return. You can then pay the difference in price between Premier & Standard. You can also continue using Standard if you want. Premier will provide you with more guidance on Investments and foreign income, but Standard has all the forms necessary.

Here is how to report foreign income, pension, and other foreign amounts: https://turbotax.community.intuit.ca/replies/2647976