Interconnects

That's a nice setup. If you can save up a bit more, I would recommend checking out the new Jorma Duality cables from Sweden. Duality replaces the previous No.2 model & has twin runs of cable for positive & negative. Jorma cables in a word sound natural, and are well balanced, smooth and have good tone and texture.

Duality will be the same price as the old No.2, hence about $1750 for a 1.0mtr pair. More than your budget, but in my experience, if you start out with better cables than you think you need now, they will be keepers when you upgrade your amps, speakers & front end later on. FWIW, I run a full loom of Jorma cables in my system, so i'm a bit biased. But I rate Jorma very highly against Siltech or Nordost for example.

These are definitely worth a look and consideration... KLEI gZero2 & 3 ICs

You should be able to find a good used pair of AQ Cheetahs for less than $500. For your application, I think a silver cable will be a better choice. No reason to spend more. I use the same cables on some very expensive equipment and have no desire to upgrade.

Al, I suggest you take a look at the Cerious Technologies Graphene line of products. Under your price range and outperforms products costing much more. Here is a link to a discussion on Audiogon:
https://forum.audiogon.com/discussions/cerious-technologies-new-graphene-cables