Agree you have to just spend the time and experiment as there’s no solid rule that applies. I do start with source components first, then to preamp and end at the amp. Cables in my opinion are tone controls so you have to learn the sound or difference of each cable. Obviously with a large amp you should use the heaviest gauge PC there but that may not be as important if the electrical wiring in the wall is #14, whereas if you have 12 or 10 gauge it will make more of a difference on the amp. Room acoustics have a lot to do with how your equipment sounds and that’s where cabling can tune your system to what sounds right for you and you alone. Just going to have to experiment but if you’re looking for somewhere to start better cables on source and heavier PC on amps.
Good of luck and take your time to enjoy the music.
Good of luck and take your time to enjoy the music.