There is still some progress worth mentioning.
I've been using Unison for a couple of weeks now, to sync this site and a couple of others. No problems until now and I've added a small unison page that will be expanded later.
About a month …
Things are working out fine with the virtual host in the US. The basic stuff like network monitoring, disk monitoring, nagios monitoring and expansion of the OpenVPN virtual ethernet to the new host have been set up.
The virtual machine has also been set up as my third smtp host …