There's nothing wrong with your place. As I said to Kyle, the whole point is to build progressively less shitty castles (buildings, etc.) until you get something you're proud of (and then keep going).
The Brave New World is there because the homeworld map was generated with an older biome code. The new map allows all the new biomes.
As for setting up a building claim, just talk to Itch or I when we're online and we can help you find a spot. Basically, we just need to know what kind of terrain you're looking for (i.e. flat, islands, hilly, mountanous, etc.), what biome you're looking for (i.e. forest, plains, snow, jungle, swamps, desert, etc.), and any features you may want (i.e. rivers, beaches, etc.).