I cleaned the bike today, adjusted the bearings and decided they were smooth enough for a spin around the block. With the seat post at the minimum insertion mark I can just make it fit. Within a hundred yards I found out the chain skipped like mad and the brakes don't do any slowing down worth speaking of, so I definitely need to do some more work before I can actually do a test ride.

http://www.mijnalbum.nl/Grotefoto-ADKE6VVT.jpg