I suggest u get a Ryzen build instead, some reports says that even 7700k had some stutter because of it's being a 4c/8t CPU, so getting a Ryzen will be much more futureproof (there's also some news that more cores will yield better stability, meaning less fps dips) [get a B350 mobo if u're not SLI / X370 if u want to SLI later]
getting a 60 fps depends on the kind of games u want to play and the resolution, but with that GPU, u can go up to 4k@60fps just fine
850w PSU isn't necessary unless u're planning on SLI later (which i will not suggest since SLI had some compability issues in some games), if not, i suggest u get a 650w 80+ platinum instead
32 GB is an overkill for gaming, since most games doesn't even utilize full 16 GB (unless u're planning on some heavy productivity work)