Take your time selecting analog equipment, especially the cartridge and phono preamp. If you want to hear something 90%+ of what you heard at the J. Sikora room, you will probably need to both stretch your budget and buy the phono preamp used. Analog is great, but it is very very expensive and you have to ask what you would get by selling your digital equipment and using the extra money to upgrade your digital.. of course you already have a very good digital system. BTW.. I have the same subs as you, but my room is on the floor above my garage and I had to both invest in a number of bass traps and a very very heavy equipment stand. I did this to limit the feedback through the phono cartridge.
I re-entered vinyl play after wondering the desert for sixteen years. I had about two hundred and fifty albums and an equal number of CDs and cassette tapes. Since I am by nature impatient, I purchased new records to fill in the obvious gap in my selection of years past. I was also introduced to new music by my daughters, much of it ( KPop) really isn’t available, except to stream. That said, I found some great records from Billie Eilish, Olivia Rodrigo and Camilo Cabello at Walmart. I wasn’t expecting much given some of the marketing flash with the colorful vinyl, but I was pleasantly surprised. I’ve visited a couple of semi-local record stores, but I either found my musical knowledge, or the price wanting.
Good Luck … but 100% don’t go analog and cut corners, because great digital is really that good.