If the buyin for this tournament is only $10, and it lasts all day, I'd say that it's not worth it. I'd rather play two $50+5 tournys and spend maybe 4 hours playing.
I sort of have a grudge against lower buyin tournys because I simply cannot stand the play of people in these. Some of the players in these things amaze me that they even have the buyin.
Tex, I don't know your tourny preferences or bankroll, but I'd say to let this "deep stack" thing go. That's too long to be playing in a $10 tourny, even with that many players, unless you don't feel comfortable playing the bigger tournys. I myself have never played
Pokerstars, so I probably should before saying anything. Maybe I'll give it a shot.