I am an American married to a Canadian. We are filing our immigration paperwork in less than 2 weeks. I know we have to pay the $75 sponsorship fee and $475 applicant fee upfront. Our case is simple with no red flags and don't anticipate a problem but I'm thinking I still won't get PR approval until sometime after the spring of 2016. Would it be a problem for me to pay the $490 Right of Permanent Residence fee around February, 2016? Or, should I just pay it upfront with the other fees? Thanks for any help you can give me on this.