I would need to spend a lot more playtime with the ER before I considered doing that.
I wouldn't over estimate my abilities
trust me, if you follow the tutorial step-by-step then it's fairly straight forward.
you can copy/paste almost all of it into the CLI.
install Putty on your laptop/PC and do it from there (rather than from the webui).
just create a system backup before you try, and if you cock it up just restore it again.