I think this looks great. I understand the frustration of your pc not being strong enough, I have experienced this myself several times. But Martin is right that this makes you look for alternatives and you sometimes end up learning more.
It does look pretty awesome though.
Tip:
With a project like this, adding volumetric fog towards the end, you can enable Simplify in the Render Properties, and set the Viewport Max Subdivisions to 0. This will turn off any subdivisions you have across the scene, freeing up some power for the volumetric fog.
You can also hide objects in the scene to safe a little power too, for example in this project, you could hide all the pipes, the ducts, the pipes, the railings, etc., etc., anything you don't need to see while setting up volumetric fog. Having these type of objects in their own collection is also a good idea, so you can hide them all with one click.
