You can't do this as planned with a fiancee visa. Once you enter the US with a fiancee visa, you must be married within 90 days and then you can't leave until after you've applied for Adjustment of status and Adavance Parole (travel document). This can take anywhere from 6 months to 8 months to receive your AP, and then up to 2 years before your adjustment is completed and you're given a condidtional green card.
You'll just have to bit the bullet and quit your job in Canada and move to the US entirely. Or have your husband move to Canada. With a K1 fiancee visa you cannot come and go as you please.
have a look at
www.visajourney.com in the FAQ and Guides sections for info about the K1 visa. Its a marriage based visa community with lots of information and people there who've been going thru this very thing.
Any other questions, PM or email me, I've been doing this spousal immigration crap for about 4 years now. If I don't know the answer, I can certainly point you in the direction of where to find it!