I'm also setting up a small VPN service with friends.
Mostly aimed at penetrating the firewall at my university. Although we chose to use SoftEther VPN instead of OpenVPN.
Has anyone looked at ReadCube?
I found it when searching for software to help manage research papers I needed to read.
You can download papers through their client, annotate and get analysis on papers.
https://www.readcube.com/