I liked the description and the way it added realism to the actions of the players ( ie, the faster ones were able to react quicker). I also thought about what to do if the party were in the orcs' position. I believe that a party should be able to self-determine initiative depending on their plan in a surprise round, and if they are capable of communication or devising a way of timing the attack. I know the rules basically allow that with delay and ready, but I think initiative in surprise rounds should be open and rolled after the battle joins.
Any ideas on how to add to this kind of action? (I love the countdown as the players wait in turn to act. It would seem to add urgency)