Most stuff isn't too bad, I have a Rogue SML-2 and put it together alone. The most complicated piece was my bench. Unfortunately the frame was warped so they sent a new one so I had to disassemble and reassemble again. (REP AB-5100)
Nice. I built a gym over Covid and love it.
You should check out reddit homegym, every Friday they post a stock and shipping thread with stuff in stock as it goes live driven by the community.