I am not sure about the RRSP matching or contribution limit. I would think the contribution limit would still be 18% of the equivalent in CAD so $18K but I'm not sure. It could be just 18% of $66K so only $12K
Speaking of RRSP, one advantage might be to keep the US cash and use it to buy VTI directly in your RRSP. I have heard that is a very tax efficient place to locate the US equities portion of your asset allocation. You wouldn't even need to convert money to do so.
I had a bit of US cash and contributed it to my RRSP last year and bought VTI. I just downloaded the Tax contribution receipt and it was the equivalent in CAD.
Seamless, one day when I retire this will be my US holiday money.