If I were you I'd spend a lot of time on PCPartPicker.com. It does a very good job of matching parts and giving prices on parts. You can build yourself a bunch of different options.
The war of Intel vs AMD will go on forever. Pushes both of them to go faster and cheaper. Good for consumers. I prefer Intel since I do a lot of CAD / FEA etc. These programs will crash and the developers will blame AMD, so I just stick with Intel. For just gaming, you'll be OK on either.
Currently running here:
9900k clocking in at 5Ghz, quadro 6000m, 128Gb, a pair of striped m.2
6850k at 4.2Ghz, Nvidia RTX 2080, 32Gb
4930k at 4.3Ghz, Nvidia GTX 780, 32Gb
HP DL380 w/ 2x 2.4Ghz Xeons, 64Gb.
Some other older hardware, like a firewall running PFsense and a media center w/ Plex & WMC
Point is, I've done my share of building machines.
I9 is one super fast cpu for sure. In my CAD benchmark it's 80% faster than it's predecessor. It's a hot little ah heck though, plan on water cooling. H100i works good.
I try to buy at the top of the performance envelope, this gives me second lives for all my machines. Pick a CPU and build from there. I don't buy the stupid expensive parts. Sometimes Intel will have a special cpu that's 2-3x the cost of a regular one. Or there's some special version of the video card that's megabucks. I'm not going for the special. I get good quality fast RAM (Corsair mostly). As much Video card as I can, and of course the fastest I can go on drive. I put all my files on the server so I don't need a lot of space on a workstation, but I do need speed.
I just got done replacing the 4930k w/ the 6850k as my daily driver. 6yrs old and still fast!
Go to PCPartPicker.com and have some fun with it. You'll figure out something that's in budget and yet fast enough. Good luck