Help with Linux CNC Ethercat setup

Hello everyone,

I'm a noob when it comes to Linux CNC. I currently have some Leadshine L8 servo drives (identical to EL8?) and I am trying to set up Linux CNC. I am using a raspberry pi 5 and installed the "LinuxCNC 2.9.4 Raspberry Pi 5 OS based on Debian Bookworm Raspberry Pi 5 Uspace" iso

So far, i have :
-Followed Rodw's post on installing Linux CNC from repositories
-Copied the Github repository by Marco Reps
-Compiled cia402.comp, el8_homecomp.comp, and always_homed.comp

Now i need to configure the hal, ini, and ethercat-conf.xml files and the files from Marco Reps repo looks overwehlmingly complex.

Could anyone help me figure out what are the basics needed to launch Linux CNC and understanding more what the content of those files mean and what do I need to modify.

How does the Pi communicate with (to?) the drivers?

Is there any specific reason you are using a Pi, not a PC?

For me, old PCs are very easily obtainable and work well enough (except when they randomy break for no reason).

I'm trying to use ethercat so via the onboard ethernet port to the drives.
Honestly, just because its small and would fit easily in my electronics enclosure.

I'm willing to setup a pc but would be process be any easier?

Thanks