@squared80 Bet your rig sounds awesome.
NOT!
Head on back to AVS or ASR or whatever rock you came from.
Power cords: whatever came with your system, because anything else won’t matter one single bit.
Speaker wire: any well made 12AWG OFC. Monoprice and Blue Jean Cables are cheap and effective. A coat hanger would literally sound just as good as any expensive snake oil brand but may be tougher to work with. :)