We did it once before when we moved from England to Ireland. Since we didn't have transport of our own to drive a van over on the ferry we had to do a serious de-clutter and send everything we kept via courier (not cheap as you will know!) We invited friends and family and friends of friends, and they donated whatever they could for our 'moving fund'. I remember watching all our stuff being carried away and the house getting emptier, and what a liberating feeling it was! I was elated! Never been comfortable with owning lots of stuff. We rent a furnished house and still I think we have too much of our own things! We want to move, but nowhere to move to yet, so I'm starting on the de-cluttering anyway!