We too plan on using one of our kids for our legal address.
We will stay with them in Alberta for the required 6 months, living in our RV on their acreage. We also bought the "Full Time RVing in Canada" and found it helpful in our research.
A lot of the American full-timers information out there often doesn't apply to our situation, with our climate, healthcare, taxes, etc, and the authors give us the Canadian perspective. As it is an E-book, so you can download it as soon as you pay for it.