Your current setup seems adequate for 4K gaming.
Your current setup seems adequate for 4K gaming.
The fear of leakage is much more frequent than actual leaks. Concerns about cooling become relevant mainly when targeting 5GHz frequencies. For lower frequencies around 4.8 GHz, starting with the current setup is perfectly acceptable.
I've used an H100i for over four years without any issues. AiO drives are top-notch. Just ensure you get a quality one. Corsair and NZXT offer excellent options.
For display purposes (certain video editing tests need this level): Opt for 32GB, upgrades are straightforward.
It's true and false at the same time. You can enjoy games in 4k at 30fps or adjust settings for steady 60fps. I experimented with Nvidia DSR to 4k on my 1080p ultra wide version of Witcher 3, and by slightly reducing shadows, Nvidia Hairworks plus a bit of water helped maintain consistent 60fps.