Cool. Sounds like there is enough interest. No commitment needed at this stage, unless you have points to use like I do!
ACME Grand is on 1st Sept, so I'm thinking we should aim for a week later.
I'm thinking about traveling out on the Wed night ferry (7th Sept), and back on the Sun night. But with a route in the Netherlands that is a square, maybe North on day 1, followed by E, S and W. That way if anybody heads across on the Thu or Fri night, then they can meet up with the rest of us towards the end of their first day.
Another feature is to have less and slower cycling (who ever had the idea of incorporating a 200km Audax ride!), so perhaps 100 - 120km each day, and incorporate some attractions along the way. The cycling museum was really interesting last time.
Anyway, plans can come later. Unless there are any immediate thoughts why these dates won't work, I'll book my ferry before the year end, and then start doing some research. Might find that the route heading South is better. Will resurrect the ACME Goes Dutch thread when planning starts for real.