Ferraro said last night he expects Price to be the #1 and I would be pretty shocked if he isn't, although Lu should backup over Ward and MAF.
It depends on how PK plays this next year, if he can elevate his game I could see him making the 6th or 7th / 8th D, especially seeing as he's a player that takes his game to the next level in high pressure situations.
I'm only saying that with regards to the official roster that would be released at the start of the games next year. I'd imagine Price taking over the starting role if Luongo falters like Brodeur did.