That would be the dream final, but the Federer vs Djokovic match isn't a foregone conclusion. I do fancy Djokovic making the final to be honest, but if Federer pulls out one of those magical performances, there will be no stopping him. As for Murray vs Ferrer, I think Murray will come through easily aslong as he continues his current form, but Ferrer is a very good player too.
I think if Murray does get the final he'll be hoping it's not against Federer as he's already lost two grandslam finals against him, even though Murray has an excellent head-to-head record against Federer, Federer has had his number in grandslam finals.