Servers & Platforms

After successfully installing/running Barracuda & Octopus on a local environment, I'm wondering about the best way to handle several servers for various platforms.

I'm currently working on a site with a huge files folder ( around 12Gb ). In order to avoid having to copy that amount of files between versions, I use symlinks to an external files folder, for instance:

but when the css & js caches get updated, it messes up the sync between one of the sites and the files folder. I probably could fix this by not using symlinks for the cache folders... but this is the situation that led me to try and have a setup with a healthy level of separation between stages, whilst retaining the ability to move sites across servers & platforms.

How do I achieve this with BOA. To be more accurate, at this point , I can setup several platforms on one Octopus instance or even several platforms spread across several Octopus instances, all this on a single server... but how can I setup a single Barracuda instance with several Octopus platforms across various servers, or one Octopus platform with several platforms across various servers?

What would make more sense? The idea being to retain as much as possible the concept of a central point of control over a network of servers/platforms.

Also, since each BOA scripts comes bundled up with all the necessary dependencies ( Nginx, MariaDB etc... ), how do I go about setting up a slave server?

Since I don't have the skills to split the scripts in parts I'm concerned with, I would simply run the Barracuda script on a slave server and follow the Aegir way of adding that server to an Octopus instance, what would you recommend?

Thanks in advance!