I've only rented scooters from http://www.gilex.nl
but the place is chock full of used bikes from ZZRs and
Hornets on upto a Britten (!) so I'd imagine they could hook you up or
refer you wisely. They always do me right.
Even if not it's worth popping in as a free motorcycle museum
since they're convieniently located off the tram by the
big firehouse and Texaco...
Route planning... definitly Google Earth and streetview so
I can recognize the interchanges from ground level then
GPS as a backup for when you just need to make time.