There is a forum member from Ireland that offers travel services for what you want to do. He has his thread here: http://www.advrider.com/forums/showthread.php?t=868979
. Basically he offers to buy a bike of your choice, store ist until you arrive and buy it back if you leave. I assume there are certain conditions that need to apply but you should check that yourself... Maybe it's an option for you. Seems to be a lot cheaper than bringing your own bike or rent one.