So just buy the frame. Nice parts are cool, but some of the racier parts are a little pared down for reliability. For sure if the tubing is designed for your weight in a responsive racing set, it is going to be too light for you and your gear.

As a guy who weighs 220, in a world where the average chic weighs 140, it's interesting to note that in the True temper line, the heaviest tubing choice Henry James the distributor sells, on a shorter stay basis than a touring bike is for someone who weighs 150 pounds. They are all chic bikes, look it up yourself the tubing catalog is online. Of course if you weight 120 that's a whole other story. Touring is it's own juicy technical specialty with it's own requirements. Presumably people who even know what a Chris King/mavic yatta yatta are, are into bike gear in a big way. So why would you sellect something that totally doesn't match your intended ride for possibly one of the longest in the saddle stints you will undertake? I don't know what the average CC race looks like but it probably isn't all that mcuh like a loaded bike on the shoulder of the Trans Canada...

Anyway, people do this trip on Walmart bikes so anything that strikes your fancy might work. Though Wally bikes at least have the advantage of dealers, and supllies stretched out across the country. When my fancy Schwalby tire blew it's casing, I limped into a town that night that had both a Wally and a Canadian tire, and not a single 700C tire though.