Cost break down of hifi system

Hello, just curious on what you guys recommend for the cost breakdown of a hifi system ? I have heard a lot about 15%-20% for cables and roughly 30% on speakers. Right now I am in the middle of building my new system. I currently have pass labs xp-12 demo model and an x250.8 NIB from Reno Hifi. I got a hell of a deal at $13500 for both. I also got a very light demo pair of Dynaudio contour 60i for 25% off. Based off what I have given, could you guys give me a breakdown on what I should spend on source and cables ? I was leaning at the Cardas cyngus cables. For dacs I was looking at the all in one lumin t3 or an aurender n200 with the chord qutest dac. I am also debating which audioquest niagra to get, the 1200 or 3000 ? Seems the me the 1200 does everything.  I’m open to suggestions so please tell me if I am off track. I wanna get it right the first time.