I built my last house with SIPs- just myself and one other guy, basically. We had a sort of barn raising party when we put the panels up and got about 10 people involved. But after that, just 2 or 3 of us built the rest of the house. I'd say the big lessons are to be ready for other trades to balk and charge you more for basic services that are not much harder with SIPs but are outside of thier normal workflow, so they upcharge. Use one of the big manufactures- we went with a smaller shop and has some consistency issues. Since you are in a cold climate, you need to doe some research and thinking on the roof and panel joints. There's a good research paper from the Department of Energy Building America program which is also on the Building Science Corporation website. There can be some issues with moisture drive in cold climates that you need to address. Overall, though, I would do it again. Let me know if you have specific questions.