I’ve done most of these upgrades minus the screen. The keyboard swap wasn’t too bad. Coreboot was a little more scary because of flashing rom and things. The 220 keyboard is pretty nice, although I had to buy two because the first one I bought had a dead key :(
My franken230 is my “thinking machine”… it’s what I use any time I want to write something out because the experience of typing on it is so nice.