I would wait at least until a week after the 4080 super comes out, this should impact 7900xtx pricing and is really soon.
Personally I would consider waiting the ~8 months for RDNA4 and be the first to buy the new flagship if I had your budget and monitor demands, and rock the 2080ti on medium and dlss if necessary.
Watch the 4080 super reviews on wednesday, there should be fresh 7900xtx data in there to make up your mind. It is 2x faster than the 2080ti according to techpowerup, so you might be getting 140-180 fps on your setup and allow you to skip a generation. The 7800xt has dropped to €500 sinds the superduper launches, fingers crossed for your 7900xtx.