Welcome back. I did the same about 5 years ago after leaving vinyl for over 35 years.
You have a nice basic system as a starting point. I would simply relax and enjoy it. Carefully listen and find the weak areas over time you want to improve.
Buy records.
Soon enough, let your ears tell you what you want to improve upon.
But, if it does stick, be aware, an ever improving vinyl rig can become a deep ‘rabbit hole’. In 5 years I have spent much more to improve my system than I ever imagined I would, and it’s been all worth it. It didn’t take me long after dragging my old turntable out of the basement 5 years ago that I knew it was, indeed, magical vs digital I had become accustomed to for so long. And now, much more so. But it takes another level of cash.