I rode to Paris with a chrome messenger bag, unassisted. Was on 48/18 ratio. No brakes
London to Newhaven was by far the most grueling.
Travel light, travel fast. One thing I learnt was riding with none fixed touring bikes is difficult as going slow (to match thier speed) was much more draining than getting up to speed and letting the bike run.
Anyway here's the edit if you want to look.