Just an update. I did a lot of thinking and realized that a 1600x AM4 build would not only be more futureproof, but also flat out faster for everything I do, as I game at 60hz, and by the time Ryzen 5 doesn't do that the 7700 would long be obsolete first considering how threaded the new games have become, and that the 1600x is already faster for other uses, and does more than 60 frames at every game that came out until now, is only going to get better within a year or two while being overclockable at much lower heat.
Right when I was about to pull the trigger a fellow forum member at another board that I frequent offered a deal to sell his 7700K for 220$ if I agree to get it for that price right after Christmas time, as he's going to build a Coffee Lake build at the time and sell his 7700k, and would rather give it away in person to someone trusted rather than list it on Craigslist. I agreed, taking a gamble knowing the 7700k will depreciate in value, but hopefully not that quick to lose a lot on this deal. I know the Ryzen 5 would cost me the same, and comes with the better platform, but the logic was that it's already painful to upgrade now from a platform I just got and set up, I'd have to buy a new motherboard and sell the z270 board at a loss and the 7700k should last me the 2-3 years until new major features are out, hopefully, since my use-cases are more GPU than CPU heavy.
Other than sour taste of being on a dead end platform that does not seem to have much future in it, the problem will be cooling that thing. I assume I'll have to downclock and undervolt anyway, but I might get away with slightly more frequency than a 7700 would give me.
TLDR: Will get the hot and quickly depreciating 7700k for 220$, semi-happy about it but it's the cheaper and more convenient option, but next time I will get the platform offering more longevity, likely going to be AMD as getting Intel made me regret the decision the very same year, but I have to live with it now and try to make the best of it.