My initial thoughts were that 4 was the weakest candidate but having given the matter some thought, I think I was a bit hasty saying that. If I had to pick one to go first, I'd probably go with number two. My reasoning being that the immaturity and spamming could bring the staff into disrepute, cause drama within the staff and their relative newness to the forum. However on the face of the latter, I would say that some staff members have been promoted earlier than under a year and it wouldn't be unheard of, but in this case I don't think it would be justifiable to do so.
Edit: I agree with Roto as well on number five. So either of those two I'd be fine with eliminating.
