Let me also welcome you to Canada. I can relate to a lot of what you're going through. Although I was raised in BC I am also a US citizen, so all the tax implications etc. are realities for me as well.

As far as importing your currently owned firearms, there has been some good advice presented here already. You are allowed a one time exemption from the rigors of the ITAR export rules if you are moving from the US. That said, you would still need to contact the US Stare Dept to confirm that and get the proper documentation to present to CBP on the way out of the US and then again to CBSA on the way in to Canada.

As registered exporters from the US and importers in Canada we are extremely familiar with the laws on both sides of the border so please feel free to call or email me any time if you have any questions or concerns. Contact info can be found at www.aztecharmory.com. I'm also an RCMP verifier so I have access to the Canadian FRT (Firearms Reference Table) so if you need to confirm the status of any given firearm I can help with that to.

Oh, and you don't have to move to Alberta... not that there is anything wrong with Alberta, there is some beautiful country and great people there, but all you need to do is come inland a couple hundred miles and you will find a much more relaxed gun friendly social climate...