I've been playing since the early access launch,
completly solo self-found (SSF).
Thanks to Asmongold and his mods I was able to play a bit during the alpha test, but I went into the EA blind and figured things out on my own.
The manor is far from done, still need a lot of work, but I wanted to share this to show that solo players can still build big structures.
Playtime: over 130h
Bought the 4 slot EA-pack