It is very late to come out with this information now, but thought to put it out there anyway.
I will be teaching a workshop on handbalancing in Helsinki the weekend 27-28th of april. I am a graduate of the University of Dance and Circus in Stockholm who specializes in handbalancing. If anyone is interested, here is the link to the gym that organizes it. Thanks to Cole Dano for making this possible.
http://punavuorifoundationalgym.fi/handbalancing-workshop-mikael-kristiansen-2/