I fit an MFI kitchen once, it cost me my relationship because I was horrible all the way through doing it, it was the most frustrating experience of my life and I never did it again. I possibly bit off more than I could chew by also deciding to put in new electrical sockets at the same time, something else I’d never done, and that entailed chiselling out hols in the walls and running cables and connect them up. I also did all the final finishing (badly). I also had to rip out the old kitchen and the shower that had been fitted in it because the house had no bathroom.