Road bikes are not really suitable for this kind of thing. They are nervous, unstable with a camping load, and the tyres are too narrow for the kind of roads and trails you will be riding. So indeed a tourer like the Revolution tourer is far more appropriate. The rack looks a bit flimsy, however.
Alternatively, buy a good second hand bike from a higher price bracket, such as a Thorn Club Tour or Sherpa, or a Dawes Galaxy.
Willem