The key question is not if the Pi2 can support Lisk (it can), the question is whether your internet connection has good enough latency statistics to support the required ping-pong communications with 100 other delegates in the 10 second blocktime.
What would be the necessary characteristics? A VPS cloud serve as Ocean?
If I am not delegate, I can participate in the network or would have to apply?
My company provides infrastructure services and I think I can participate support.
Thanks in advance.