Just FYI, it also needs 200+ GB hard disk space to install, I believe minimum GPU recommendation is Nvidia 2080 (or equivalent) with 4-6 GB GPU VRAM. I've seen posts online where they recommend higher-end chips and much more GPU memory (12+ GB VRAM) for building larger worlds and higher poly resolutions.

You can get an external gpu (eGPU) to keep your current setup. Check the Razer Core X, and add a graphic card of your choice.

Worked fine on i7-9900k + AMD RX 580. Not sure about supporting nanite/lumen though.

What about the epic launcher to download your marketplace assets or megascans?

Runs fine on Rocky 8.6 as well.