Hi. I am similarly in the brown district. For now Its the bare necessities. But planning something more in the future.
For a base I'm currently traversing the overworld, in search of the ideal ocean locale to emtpy out a big section and have a sort of mix oceanic valley. Shape?? Not sure yet... all I know is I'm at 17000 blocks from spawn and haven't found the ideal place yet.
Also trying to decide on final shape of the valley, something symmetrical like square, star, octagon, pentagon etc. or even a rhombus 🤔
Or something more natural and irregular.
Anyway, good luck all in your endeavours.