I went a whole month with my TF101 without ROMing it. I technically never rooted it as I just wen't straight for the custom ROM on it. I don't think it is all that necessary, but it is a lot of fun for me to play with and I do use the root for a quite a bit of things, though I don't find any need for juice defender and haven't ever used a backup program other than the nandroid backups from my recovery. I keep my documents backed up on my home samba server and if I change ROM's I just re-install all the apps manually. I would give it a shot stock as the TF300/700 can be a bit finicky with unlocked bootloaders (the tf101 never had a locked bootloader) and if you do decide to unlock the tablet make sure to read up well on XDA before doing so, there have been plenty of people that have messed up their bootloaders and hard bricked tablets with the tf300.