Retirement tax questions

Hello,

 

I think that I have found the issue.  This is the first year, my foreign tax credit is more than 300, so I need to choose "Simplified  Foreign Tax Limitation" .  Once I choose this, I can't submit my tax online.  I don't need to pay any ATM, do I still have to select the Simplified Foreign Tax Limitation for the first time or I can just choose the Non-Simplified AMT and wait until I need to pay ATM ( unlikely)? 

 

I will receive the Canadian Pension income every year from now and on, so please advise.  

 

If I have to choose the Simplified foreign tax limitation due to I will be  receiving the Canadian Pension income every year going forward, then I will just print out and filing by mail.  Thanks.