The CSD could certainly do his welcome on the ground.
Crew could come round on the ground with a notepad enquiring whether customers wanted:
(1) Food
(2) Hot choc/cookies
(3) A drink
(4) A sleep
If they select (4) ask if they want woken for breakfast.
I don't actually know how early you are allowed to recline...
Presumably 20 minutes into the flight when the seatbelt sign is off.
Having already agreed you don't need any food or drinks, passengers could get straight to sleep 20-30 mins and don't need awoken until 20-30 mins before landing... which means on a JFK flight taking just 5 hours 50 (source -
http://www.youtube.com/watch?v=c-hjTiUZmUs) you could manage a decent 5 hours sleep.