Cable advice

In my experience it takes time and listening tests, trying different cables until you achieve the level of synergy that suits your preferences. This may or may not be a full loom. 

I also have four different brands currently. IMO it's a good idea to start with one inexpensive brand throughout as a baseline then choose one component to try different cables on,usually the source first.

Think about this. The internal wiring inside each of your components is different.

While keeping the same cable brand and type may be one approach, with some of the higher quality cable brands/types, intermixing can also produce good results.  

I’ve never been able to last with a full loom with the same cable. I’ve tried it with several manufacturers.  The combination you can come up with to mix and match and tune your system is endless.

that’s part of the fun of system building for me.

I've got 6 different brands of cables in my system currently and it sounds fantastic. Lots of trial and error to get here.