That's historic work noted above, Stephen. Well done - and I mean that very sincerely. In my other passion at the race track, it's really interesting the people you'll run into, their unique and special backgrounds. I wonder if passionate things just draw more people like that to them. Interesting.
Ha! That's way cool, because in my "spare time" I was also an accredited motorsports photojournalist for both Laguna Seca and Sonoma Raceways for several years (7 for Laguna and 16 for Sonoma)
Some examples of my PJ work...
Duel at Andretti Hairpin
Daytona Prototypes in Turn 6 at Laguna...

MotoGP rider Stefan Bradl at Turn 6 at Laguna Seca

MotoGP rider John Hopkins blasting up the front straight at Laguna...

I'm curious, what kind of speaker cables, cables in general, do you like?
I'm using Shunyata Research Alpha V2 speaker cables that use the HARP module built into them (that you referenced in your post). The HARP technology is really amazing. I know that Danny knows what HARP is and from his first-hand experience, what it will do, as well.
As for the gauge question... I've been running Danny's 16awg wire bare at the amp, and directly connected to the wires on the crossover... direct wired, eliminates a set of binding posts. I have no problem, at all, creating very uncomfortable sound pressure levels in my large room. And, it sounds awesome. But, playing more...
Earlier in the week, I picked up a pair of pretty serious cables - a used pair of the new Shunyata Research Theta. They are the line just under the Alpha line that has the HARP module in them (and retail for $6k). Retail on the Theta is $2k, and I bought used. We'll see.
Ha! That's so funny, because just today I placed an order for some of the new Shunyata Theta XLR interconnects. Also, Neil Gader published an excellent review of the new Theta cable line in this month's issue of
The Absolute Sound (pp. 116, January 2025). He loved them, referred to them as "category-busting" and gave them his highest recommendation. So, I think you're going to really love yours, as well.
BTW, I also have a full loom of the new entry-level Shunyata Research Gamma line that I'm presently writing a review for, and they are very impressive, as well. If you have other secondary cables (e.g. Ethernet, clock, power cables, S/PDIF, etc.) that you may want to upgrade, the new Gamma line is a massive value proposition (where Value=Quality/Price).
In fact, I'm listening to some of them (PCs, ICs, and clock cable) as I write this. In a week or so, I'll install the Gamma SPs (speaker cables) and Gamma Ethernet cable between my music server computer and EtherREGEN. So far, I am really impressed, the new Gamma line is very "musically-engaging".

Cheers and feel free to stay in touch.
Best regards,
–Stephen