Yep, Emerson will be out suspended but as you said it's somewhat suiting as he deserves a rest. If I'm not mistaken Zlatan has started in our last five games and he played 88 minutes today whereas Del Piero only went for 70 so I would go with a DP-Zala partnership.
Nedved should play an hour at max imo. He has been a tad bit off recently and could definitely use a rest. That applies to Zambrotta as well but I don't think he'll be able to get much of a break if Zebina's injury is serious.