the best thing would be to have rooted and made a backup.
since hindsight is always 20/20,best thing to do is root now.
run revolutionary s-off tool. if you wish to be rooted and use some root tools to backup your current apps,maybe even make a nandroid backup in case you want to run this again,then allow revolutionary to install clockwork recovery and then flash superuser in revcovery.
flash the 1.70.605.0 RUU in hboot if you wish to remain stock and recieve an OTA to boring official GB
if you wish to remain rooted,after flashing the 1.70.605.0 ruu,flash a recovery in hboot,then flash superuser in recovery. only disadvantage to doing this is you will have to manually flash GB in recovery when the time comes.
it is good to be revolutionary permanent s-off,even if you have no desire or intentions of being rooted.
my 2 cents
Revolutionary