Hey Paul,
Just was looking at Blesta today to use as an alternative to WHMCS.
We are a web hosting company, currently utilizing cPanel and SolusVM (And will also be using a gaming control panel called Swift Panel in the near future.)

Saw that you were looking for a test SolusVM node to test out the API. If you'd like i'd be happy to set you up with one, shoot me an email at matt@kerplunc.com

Hope your having a good weekend!