I think, that is the right way. I use it with my RN2, used it with all my previous phones and all the Roms. Never failed me. Just make a backup!! Then you can play...Wish you all great weekend, friends.
After reupload of rom, i have no problem with internet(wi fi, or 4g). Battery is so, so... I really have no opinion yet. No FC in any application no more.
As Stefano said, going from stable to dev Rom, you have to wipe data. My system is: i always have a map on Google Drive with the latest apps. Then it is not really time consuming. Even, if you change phones, or something...