I think I have my mind made up at least on the AC 14SE for my AVR/preamp, Node 2 (C7) and my display.The Pangea Audio AC 14SE MKII Signature Power Cable is the one to buy. I have owned all the Pangea models over the years and the MKII Signature offers a noticeably lower noise floor and more detail than the others. I believe the 14SE was discontinued.
I don’t think you need the AC 9SE since your components are not drawing high amounts of amperes. As for the Furman, it is a passive conditioner, but would still benefit from a PC upgrade. The AC 9SE might be worth buying if you’re planning to upgrade to a high power amp or for use with a power regenerator.