Regardless if individual projects use the whole feature set, it has the functionality and capability out the box. Saying it's not a CMS is a silly nitpick.
Not liking the solution you have doesn't mean you don't have a solution.
Anyway, watch the playlist I sent, it's a great overview of the OSI model with some other stuff. You mentioned not understanding some layers, once you do you will understand the limitations of the hardware you have.
You are basically asking for people to solve a solved problem, there's no actual need for keeping the PCs separate since you control them both, and oh and you want it done cheap. A bespoke custom solution will not scale regardless if you need it to or not, you should know that.
Regardless if individual projects use the whole feature set, it has the functionality and capability out the box. Saying it's not a CMS is a silly nitpick.