I flew from US (Eastern time zone) to Amsterdam, arriving the day before the race. It did not go particularly well, but on the bright side it was quite easy to wake up plenty early after I conked out around 4pm! I didn't sleep well on the flight, and tried to stay up as late as possible Saturday so I was pretty tired at the start.
A Friday arrival should be fine - you don't necessarily need to be adjusted to the time change, but give yourself Fri to fall asleep early and get a decent night's sleep, even if you wake up very early on Saturday.
It's a good race - flat, fast, cool. Amsterdam is a great city as well with lots to see. I used to live in The Hague so it was a nice homecoming for me to be back in The Netherlands.