Hi,
Why not just fly below 1500ft (below the TMA) and request a CTR crossing at Schiphol? I have done that several times. Quite interesting and sensational to do. Best routing is from West to East (Zandvoort via overhead to Vinkeveen (reporting point Victor). If you try to cross outside the peak hours, good chance that crossing is approved, and even a compulsory orbit around the tower is possible.
Important: Know the field, the runways and reporting points, by head and have all available on paper. Be quick and fluent in your RT. Limit your information to what is really important for the controllers.
It might help to contact Amsterdam Information 124,300 first, to ask them to coordinate if the CTR crossing is possible. If OK, they will pass you to the right EHAM tower frequency.
Any more information about flying in NL, just send me a PM.
Oscar