That is a really good question. While I have a lot of experience putting together systems (for me) from $5K to $150K, I can’t answer it. I think I would continue to invest in components for now. I have bought $100 power cords from Shunyata and others and honestly got no improvement. On the other hand the Audio Quest Hurricane ($2K) I put on my amp was simply stunning… a really significant and cost effective enhancement.
What is your system and venue? There is a place to put photos under your ID. This would be really useful to help answer your question. It is really difficult knowing nothing about your system.
I would invest in components until your average component cost is well over $2K. This is a guess.