To continue on Backpacker's reaction: where exactly do you wish to go? EHMZ still seems expensive from a Belgian point of view, wasn't the landing fee 20 euro's or so? You may find several Belgian aerodromes with at least the same level of service yet less expensive.
I think I can safely say that the Netherlands is not really a friendly place to G/A.
OTOH I wonder what makes you consider such main airports like EHAM and EHRD for a SEP. Main airports are never cheap, nor are they really convenient.