Nah, you don't need to re-detail from scratch or anything. Just start by removing the unnecessary stuff.
First screenshot, for example: Remove everything on the table, the table, the benches, the set of lockers behind the pushcart. Much more manageable amount of props.
(Oh, and maybe add a floor, even if it's just some basic wood -- having resupply props on dirt there looks a bit strange but that might be due to the cropping of the screenshot)
Okay, second screenshot may require some re-detailing. It's strange to have the tracks cross over a traincar.
Third screenshot, remove the large white vertical pipe, the pipes in the small building, the carts on the side track, the concrete barricade in the bottom right corner and top left corner, and adjust those rocks to serve the same purpose.
Kep