It took about 23 hours to get it booted under its own power using a binary kernel. And on the 4th day (today) I've managed to get a custom kernel working. Gentoo has been very fun to use and to customize, and it's very fast and responsive, even on my old hardware and with a hard disk, browsing heavy webpages with Librewolf is no problem at all. I've been sleeping on Gentoo for WAY to long.