<Id> Questions, how long to wait for name changes.

[Redicule]

Hey all I am now looking for some answers on changing last names on accounts.

I have a few accounts, and some im giving to friends etc. Some I want to change to my own last name. The thing is I dont know how cautious blizzard is about this kind of thing.

I would minimum like to change 3 accounts to my last name(Each from different last name.......(ex: smith-hg jk-hg and ik-hg) and 2 accounts to different friends last names, but they both would be changing from the same name(ex: smith-jp....smith-ik)

How cautious do i have to be about timing. I would like to know how long I should wait for my last name, and also if anyone has any experiences post them here. Just dont want to get banned like beyond the point of being able to be unbanned.