I went Gentoo to Debian to Arch.
Gentoo took too much time to maintain. (Not just compile time. But also human time editing config files).
Debian was great, until I had new hardware that needed a recent kernel and Wayland. i tried testing but that wasn’t stable enough and took too much of my time maintaining.
I’m using arch now. i would only switch if they do something egregious (push ads, malware or snap)
can u boot Linux of a USB? some USB drives give 1000mbps read so should be nice and snappy for a root fs