Important question, brief summary: I am planning on a cross country tour this coming march via the southern tier route. First tour, longest previous ride has been a couple of centuries. My bike is far from a traditional touring bike. It is a 2002 Lemond Victoire, a very decent titanium road bike. I know this is not ideal, but I just don't have the kind of money to get a decent touring bike so I figure I will slap some 28s on and hope for the best.
The biggest problem I am encountering is where to put the load. I plan on relying mostly on camping, and of course the bike is not setup for racks and paniers, so my idea is to use a large handlebar bag, a seatpost clamp rack that will serve to carry tent and sleeping bag tied down, and carry everything else in a large quality backpack such as the Chrome Sultan. Am I setting myself up for disaster here? I've looked around and can't really find info on anyone else using back storage so is it just unheard of? I know it will be a strain on the back, but weight-wise it shouldn't be more than around 30 pounds and I am used to commuting 20 miles each way daily with a messenger bag loaded to like 15 pounds, so I figure it is possible. Anybody have some valuable input on this?