Did you keep playing once you completed the Omega Expedition?
I decided to build out my base on Nash 33/W4. It has an S-Class Sodium mine and all of the crops except NipNip. It is mostly built with stone with some prefab structures.
I actually hit the base part limit and had to back off so it could still be uploaded.
It's built into the nearby landscape...
A portion of the base is under ground but I did not use the Terrain Manipulator so I don't have to worry about it filling in later...
It sits across from a crashed freighter...
Now, I will probably take a break for a little bit until the next major update.
You can find it at -22.81, +111.53. I have a Communications Station there as well.