The order is correct, remember to do a full nand backup of boot0/boot1 and the rawnand, you can also backup the user and system partition if you want.
Use lockpick_rcm to get your keys.
Don't follow youtube video, follow a written guide like rentry. You don't have to make an emunand if you don't want to if you don't plan to play online at all, but recommend to have a NAND backup.