Will have to wait and see with Chamakh long term, but he looks set to play against Liverpool with Cesc and RVP out. Hernandez too might start the first game given that Rooney is short of fitness, but there's no way he'll be playing week-in-week out unless United pick up a couple of injuries.
I'm surprised you picked Essien to begin with Tom, I've only been playing FF for a couple of seasons, and he's been injured a lot in the last two seasons, but does Essien score that many points? I assumed he'd not be great for FF, but that wasn't based on any prior knowledge...