>>106331682
The 265KF is gonna be an appreciable jump in application performance over the 9700X, but the Z890 is a dead socket that will be replaced by Nova Lake on LGA1954 next year that will actually have future release compatibility.

Meanwhile AM5 will have an upgrade path to Zen 6 next year and Zen 7 as well later. Plus it's cheaper. I'd go with the 9700X bundle.

GPU recommendation is whatever depending on your budget but RTX 5000 Super cards are due out in months possibly before the end of the year.