The easiest way would be to ask #support at Discord. The guys answering there have done more tests and know more than I do especially when it's about various setups.
You can start your private server with [SteamPath]\Eco\Eco_Data\Server\EcoServer.exe, too. When you start Eco that's what happens when you create or join your own private world in background.
To change your Configs you can do that or use Chat >> /openserverui where you can change various settings.
Unless you wanna play with all the settings and try to learn by doing I suggest to ask in #server as you'll probably get a fast and precise answer.