IN order of importance, I would say based on my experience, that the digital cable is most important, the IC's next, and finally the SC's are of the least importance. I have heard some serious smearing of leading edges with some run of the mill copper digital cables. I am thoroughly impressed with the MIT Shotgun IC's. I have MIT SC's right now and they don't really make a leap over the Blue Jeans cables but they match up in the bass region with the MIT IC's better.
Get a KCI or AudioMetallurgy digital in gold or gold plated silver. We do alot of high fiving here on some of the same items over and over and I've tried to stay away from the status quo. I love Poiema, MIT, Audio Metallurgy, KCI, and other silver or gold IC's. Don't overspend on the Reality SC's, (my opinion), and just not worry about it right now. Been there and done that and the used MIT SC's I bought were less than the $99 BJC 16 foot run of 4S11 Canare wire.