goPanel is made to work from your mac with unlimited droplets / vps/dedicated servers
we do most of our tests on DO droplets and they all work fine.
What you must make sure is that your droplet is clean/fresh no LAMP/ ftp servers installed as they need to be installed from app. (we made a migration on apache) but not for ftp or nginx).
The idea was to manage remotely from an app "all" your servers at one time cost and its all done without hosting any scripts on the server (we just write a conf file to know if gopanel was setup thats it).
Its just 6mo old project, i think its taking nice shape but long way to go to suit all needs
All service installs are made from linux distro repository (eg: apache/php /ftp), so you won't be able tp choose php 7 is just what the distro provides (its safer if maintained by your distro repo)
Connecting to it should work fine as long as its a supported linux distro, your have sudo/root rights
also a small issue on DO without key auth: *if you only have the initial/temporary password on DigitalOcean, make sure you change it from terminal before connecting to server using goPanel.
- any questions and feedback if very well appreciated (you can use the contact form on our site)
thats about it as short as i could describe it