3d Printing a mini tower questions

[EarthInheritor]

Hi

New to a board and only been pretty for just over a week, but i want to, eventually, start a cool project.
I want to 3d print a town, starting with the buildings and slowly adding props.
But as I'm sure new i need a big of advice.

I found some profiles online for miniatures which seems great and uses a .2mm nozzle.
But when it comes to printing the building that seems a little over kill, especially when i sliced it i got 10days +.

I want them to be a great quality for details but i feel this might be a little nuts. Which i get the same look using a .2mm for smaller props and people and using a .4mm for the larger objects like building and carts etc?
I can set them to the highest settings still. Really not sure what profiles and nozzles to use and for what when it comes to building the town.

Much appreciated, thank you