Just did this. Set them both to mixed mode. Recruitee on questing/dungeonbuddy . Recruiter on party bot/dungeonbuddy. Have the recruitee as the leader and set the other account as a party member by enabling party mode. Have leaderbot enabled on the recruitee. Have the recruiter on partybot and set the recruitee set as the leader. Disable leaderbot for the recruiter. The recruiter will follow around and not pick up any quest but just help to kill from afar. This is best to be the ranged DPS if you have a ranged/melee setup. The recruitee will get his gear upgrades from quest/dungeons. The recruiter from dungeons only. This works well until level 58 if you have 25% heirlooms. You can hit 58 in a day easy almost 100% afkable. After 60 with the flying it is too tough to keep them together. I had to set them both to quest on their own and leave them on mixed mode so that they still come together from grouped XP.
TIP: In the newest version of Dungeonbuddy you cant add a partymember name. Theres a thread on these forums that explains it here and also where i got this from in combination with another thread using grindbot to do the same thing. The questing as a party is much safer though and even watching it just looks like 2 friends leveling. Make sure the set the pull distance for the melee for like 10 yards and the pull distance for the range to like 14. Set follow distance of the ranged to 10. Therefore the melee will always pull first and you will look less like a bot running around the lands. With this setup they will log on and auto send invites. Que for a dungeon and start leveling. Even in separate zones the recruiter will travel to get in range of the recruitee.
For fully AFK in dungeons set the follow distance behind the tank to 15+ and turn on loot bosses only. I almost got discovered when I had it set to 10 by a tank stopping and running. Esp since I was a pally and was almost catchin up to him. Make sure if you have a pally you have it set to not the threat producing seal. I think its Rightgeous Defense. For a hunter make sure it turns off pack. Those two things will get you kicked or discovered. I also reccomend getting a chatter plugin that will say something generic like "Hey im on the phone" when you join a dungeon. I wish I would have had this when I leveld because a couple of groups discovered and kicked me. Prolly also reported.
If you are lucky. I hear reports all the time of SoR accounts getting banned very fast. Then again I guess if you stormed them to 90 you could run them 24/7 until they were taken down. I hear of people doing this weekly and they even pull a decent profit since the toons are usually 15-30 bucks.