These instructions for doing a fresh install are very good. To me it makes more sense to manually save and transfer your databases rather than restore from backup (although that might just be some old thinking from when you literally did just transfer files to a new computer!).
Setting up DT itself doesn’t take particularly long, but just so you go into this with eyes open in case you’ve not done it before: you’re looking at at least 6 hours of work doing a fresh install. OS Ventura took 2 hours to install when I did a fresh install recently (you can leave it to run by itself), and it then took several hours to install my essential apps and get things set up back how I liked it (I still haven’t installed “lesser” apps - mostly I am just doing it as a need comes up, so technically my work isn’t finished, though it hasn’t bothered me).
Also, documenting this for anyone who needs it: you need to use Disk Utility to erase the Mac if you want to do a clean install. Do not use the “Erase all content and settings” option in Settings/Preferences if you want to do a clean install. (Source = Apple Support)