From experience, it’s a good idea to tell possible punters:
1. Where, how and when you’ll be departing. Let’s guess that as you live in Essex, it’ll be from Dover or Folkestone, by boat or train, returning via Calais. Which will then just leave the times.
2. A rough idea of what you envisage road and daily distance wise. Calais to Munich in one hit down the motorway and the same single hit back, giving you two full days in Munich.... doing what? Or is it a two day goat track jaunt there and back, with one night in Munich? Or something else?