Best matching Cables and interconnect

I would need total of 28 feet of speaker cable (2 - 14 foot cables) and about 4 feet of some digital audio connector for the Plini to Denon player. I will be running balanced and my budget is aound $500

I do appreciate your advice Billm!

Thanks Bill..this does validate the steps that I intend to take!

I am with you, that with the overwhelming science/theories around cables and interconnects; personal preferences and taste become the major factor is decision making and I've got to listen and feel the system before I optimize on cables/interconnects..

Cheers
Mo