If Sarah gets the 4pm she could only continue to report at 6pm, not 10pm or 11pm. She co-anchors the noon so that would make for long days.
I don't like Brian solo at 10pm. It's an hour long and therefore I think he needs a co-anchor.
I brought up Tamala because all the other female anchors have gotten a swing at it.
If hard news is a factor, then I'd take Nydia and Alicia out of the running as they are too perky for that. My opinion only, but I think it's a toss up between Sharrie and Sarah, with an outside chance of Eva getting it.
If it's Sarah, I think Monica gets the 10pm, and Sharrie or Eva get weekend evenings (or at least Sunday evenings). If it's Sharrie, all else stays same.