Yeah, don't wanna do 2 weeks in one campground again...about 3 or 4 days max would be it when moving about..
NYC - would either be Liberty Harbor or stay further out and do one of those day tour trips.
Philly - Don't wanna be in Philly. Wife wants to check some places outside of Philly where some shows are filmed or based upon.
We could probably knock out all the Philly and NY areas in a two week trip easily. Key West would be one week (8-9 days). Might be able to get over to Niagara Falls also.
#1 on my list right now is the Keys...