Not easy, but not difficult.
IMHO the tricky part is probably understand at first what does what, between Henkake, Atmosphere, Fusee, RCM etc, because initially it's a little bit confusing and understand this part will allow you to handle and easily fix things in the future for updates, issues, compatibility, etc.
I suggest you to use a dongle with a jig, you can use a smartphone or a PC for that, but using the dongle is simpler and convenient when you have to restart the console.
You probably need to save the EMMC, create a partition on the SD and using other tools, but maybe it's not mandatory, and those operations will hardly brick the Switch if you made some mistake, I made it several times with trial and errors, but in the end no bricks at all, but you need the RCMloader to restart everything is something goes wrong. You need to do this just one time.