Dear Tom,
We are impressed by the amount of useful materials, data and help provided by this site, I am browsing it for some time now and learned allot.
When we arranged our tours to Alaska and then to New-Zealand we thought that the process of renting RV for few weeks and planning a tour is tough, but recently we realized that it is nothing in compare to planning a full year tour which involve buying and selling a unit.
At the moment we are at the very beginning of the planning process and we are checking the feasibility and the major subjects of our desire to this once in a life time journey.
Once the major issues are clear and all the major arrangements are done, we will move to the detailed planning phase.
We set the budget and the entry visas issues already and we are busy with finalizing the local issues regarding our business, home, family, pets, etc. that will not see us for a year.
We intend to start the journey on February 2015 and until then we hope that everything will be arranged. I am sure that this site and the community behind it will be of a great help for us.
We see your comment on the "I see no reason that you wouldn't be allowed to bring the RV back into the USA after exiting and touring Canada for a while." As a very logic one, we believe that at the end everything will be OK, however reading that instruction of the US authorities request to leave North America in order to re-enter the US raised our concern.