Why not a Sinar F. Not as small as the ShenHao, but very easy to learn LF shooting with. All the Sinar F (and P) cameras include some kind of help for finding the correct tilt/swing angle plus a built in depth of field scale. You can live without these gadgets, but they are from time to time very handy and a great asset for getting started.
Also, there are lots of Sinar cameras and parts in circulation so finding one shouldn't be a problem.

//Björn