Newbie to the awesome audiophile world

You can’t go wrong with Blue Jeans Cables LC-1 interconnects or Blue Jeans’ base speaker cables. Agree on a new TT and cartridge if you want vinyl. The Ortofon 2M Red is a great value. Getting used speakers is smart, but it will limit you to local sellers, since shipping big boxes is so expensive. So if you like what you’ve located already, go for it. But like everyone said, listen, listen, listen. I bet Atlanta has plenty of supply via Craigslist, or maybe search on Facebook for a local audio club.  I don’t know if the PS Audio Sprout fits your speaker choices, but It’s a product the company pretty much designed for someone like you, and at $600 you’d get a DAC along with it and avoid interconnects. Really, for $2000 you can get some very good sound. Good luck.

You can assemble a pretty nice system for 2 grand. Here is my suggestion:
-Speakers: wharfedale diamond 225’s (read the reviews) currently $299 use to be $449, it was selected as the budget component of the year by both stereophile and absolute sound....
-Integrated amp: marantz pm5005 (underated/ great amp/all analog) $499
-turntable: pro-ject x1/ includes sumiko Rainier cartridge (michael fremer calls it the best under $1000 turntable) $899
-CD player: marantz cd5005 $399/or hd CD-1 on sale $399 @ music direct...
-Dac: musical fidelity v90 dac $299, a class a component in stereophile...

All this can be assembled for $2395, even less as sometimes you can find the above on sale. The diamond 225’s as mentioned were originally $449, Music Direct has then @ $299. Please read the stereophile review of them as well as the absolute sound review. They will be much more enjoyable in the long run than the B&W’s, which I find fatiguing after long listening....to replace the marantz integrated mentioned above, I would suggest the audiolab 6000a integrated. It contains a very good dac, so you could forgo the above mentioned MF dac and have it all in one chassis. The 6000a is $899 but can be had for less, sometimes on sale for $699-$799....

i have been on this journey for a little over 2 years. speakers requiring
amp requiring receiver upgrade, tube preamp, dedicated Dac, cd player,
Cd player mod, tube preamp mod, speaker upgrade, cable upgrade, new preamp. blah,blah blah. sounds really great now.
if I was staring again?
start with speakers again, but with consideration to room size and volume you like to or can listen to. Some inexpensive setups can sound great at 
modest volume, but crank it up to 'party level' and it becomes a mess.
if most of your listening is digital / streaming then build your system around a hard drive and good DAC. there is so much music out there - to
build a music library around cd's seems unpractical.   
there is a lot of great stuff on canuck audiomart and similar. See if you can trial stuff. Talk to different audio shops about pairings. take your time and be very wary of industry reviews - have you ever read a negative one? Industry reviews are a neat way to discover new music however.
Chow

If you  are going to get in this hobby seriously, you must get top line equipment, if you just want to listen sound just sound so stay where you are now. Because there is nothing between, the ladder has many runs , and addiction to reach the top will be exhausted. 🙂

Good advice from @mossyrocks and while I agree that collecting CDs is not practical per se, I am one who still thinks it is a good idea. And I'm still collecting. CDs are cheap. There is great data out there on what the good recordings are. There are tons of them available. And once you buy it you own it. And for music that you actually own I do not think there is a lower price option than used CDs. Not saying anyone _needs_ to go down that path, but I would not discount it either.

I do not purchase a CD for everything I listen to but I do purchase one for everything that would be on my long term "playlist". I do books the same way. Kindle or iPad is fine for light reading I'm not likely to come back to, but for the stuff I consider important.....I get the hard back.