I would say if your sitting on a full strip of 2000 Silver Pandas you should absolutely submit the full sheet unless you see discoloration or damage from the capsules.
Also I recommend NGC for modern pandas.
The 2000 coins did not get damaged easily in the capsules like the 1989, 1990, 1991, 1992, 1993's which are in my opinion the worst for the head rubs you see. If the coin has the head rub its likely to come back a 68 or below.
The MS70 Frosted I purchased recently in NGC's old holder with no edge view ran me $750 but lately I have not seen them up for sale in 70 grade under $1K.
Pandas are very hot right now on Ebay in the USA...can't speak for China or other countries.