My system....what and how will cabling impact?

It takes an awful lot to make me pen a comment but having read and re-read MillerCarbons contribution to this question I am compelled to say, if anyone needs an example of a person in love with the sound of their own voice/messages/opinions look no further. MC you seem to state everything you think as if it's a proven fact when it's more often it's just another subjective opinion. To the OP you need to get a decent selection in to your system on a sale or return basis and give each set a reasonable amount of time. If a certain brand does not offer this forget them, there's already far too much choice. Iconoclast cables are definitely available on a sale or return basis and the Cable Company will offer you a good selection. I hope you find what you are looking for. Ps you have some wonderful components and the making of a great system.

wesheadley - I agree, cable margins are to an extreme. Extremely unreasonable - even for the research and development involved (I was in the pharmaceutical R&D field).
From experience, I've learned there are drastic differences in fidelity - wires and other components.
You can choose to believe and share what you like - based on your experiences. I will not post further to contradict. Every time I try to share experiences, someone always contradicts - always. Sharing experiences and information shouldn't be this difficult - but it is. I guess it's just human nature.
This is exactly why I gave up promoting cables. I'm not trying to convince anyone, I don't need to. I do wish a fraction of the individuals who contradict would visit me with their own wires and listen for themselves and then post here what their experiences were.
Without it - it's merely a bunch of people writing of their own experiences, mostly disagreeing with each other.

I really appreciate everyone’s feedback, opinions and dogma. It all helps me make an informed decision. I can and will give each it’s appropriate weight. From the beginning I was intending to spend around $35,000 to build the dream system I could never have afforded as a young person. I recall going to my rich uncle’s huge holiday parties in the 70’s and listening to his Macintosh equipment and being green with envy. Well $35k quickly morphed into 100k! 🤩🤩🤩 such is what happens to my well intentioned plans.
MC said HRS RXR Maple rack w/ isolation shelves is after all just a rack. I assume he was simply trying to make a point. Because even this audiophile neophyte knows that a 15k rack is more than just a rack. In fact HRS is trying to do exactly what he has accomplished with his podiums and pods. Namely isolation and vibration reduction. It’s possible that podiums and pods can accomplish the same for less. I suppose it’s also possible that adding podiums and pods would substantially increase that isolation.
That will be for another day. The sales team I am using asked me to wait on that issue for the time being. They believe that the Sacha speakers are designed to be spiked to the floor and are constructed with materials that already have created superior isolation. For now my focus is on wires, Cables and interconnects.

From that perspective your many opinions are vastly disparate. Everything from you have spent enough already on those components to you need to spend $30,000 to find the most benefit from those components. Somewhere between those two extremes lies my answer.

I will say this Wilson audio constructs their speakers using Transparent as their wires and interconnects within their speaker cabinets. I imagine they have done their research and have determined that Transparent provides the best component wires for their equipment. Or perhaps they’ve simply gotten the best deal from Transparent. Though when you’re constructing $38k speakers I can’t imagine that saving some money on wires makes much difference.
I will start by trialing 3 price categories of transparent cables and wires. I really want to hear if I even can detect a difference. I will choose that set which I believe gives me the most bang for my buck. However, I will only agree to keep that set if I can then compare it against other manufacturers to see if transparent really is the best set up for my equipment. Stay tuned. Again, I really do appreciate each and every person‘s perspective.

Yes, D'Agostino/Wilson work well with Transparent cabling but you have to go higher compared to where you are now. You could also consider Synergistic Galileo. Purist and Tara might be a possibility as well. You might need to spend $20k - $25k, new cables prices, to do it right, for cabling, including power cords. 
Do you have D'Agostino Momentum integrated or Progression ?

Integrated