Hey Oregon,
Welcome. You've found the right place!
First off, try not to "understand" how long the application can take. You will find nobody understands. I got through in exactly 6 months, but some people have gotten by in less and some much, much more for no apparent reason. Just prepare for a significant chunk of time.
I'm not sure what you mean about signing papers and it not being allowed? Are you married already? If not, do you have a LOT of common law proof? You can't apply in Canada as an engaged couple like you can in the US. My husband and I got married with just the two of us and my parents when we found this out so we could proceed with our app as quickly as possible. We then still had our big wedding several months later as planned.
You should also read the top post about family class sponsorship. It really gives a great foundation for what you need to do. It can take quite some time to prepare - you will need to have some medical tests, get an FBI clearance (or clearances from any other country in which you resided for at least 6 months) and a few other things, not to mention an enormous stack of paperwork.
My husband and I lived out of Canada while our application processed. Will she keep her BC address and residency? If not, she will have to prove that you will move back to Canada when your application was finished. An apartment lease, job offer, school acceptance letter or letters from family can work. Its not difficult and has been done by may.
I also visited Canada several times during my application and we eventually moved here for the last month of it. We can all help you with the best way to do that.
I hope this information helps - its a start at least. Everyone here is helpful and has been there, it can be a interesting process to say the least but you are not alone.