It’s pretty straight forward. You install the clean luks crim, add crim backports to sources and do the upgrades as described (as in, until you get them done), then do the unl0kr stuff (fix one line in file, install the app, run an update command) and then reboot.
It seems to work with just that - haven’t tested too much in the last 20 minutes or so. The modem script thing was a surprise but I had a workaround for that. FF seems to freeze on occasion (epiphany hasn’t, yet). Nothing specific or critical has popped up so far. However, I wouldn’t recommend it for daily use unless you know how to take backups and are prepared to let it die if in the future something does come up - more of a test-toy or curiosity at this point, I think.