^Also be sure you hit the Jack Rabbit, it may look tame but its double down finale is second to none; also as an added bonus its a John Miller coaster (ie the guy most responsible for creating the modern roller coaster, he created the 3 wheel design allowing coasters to have airtime without derailment.) Kennywood is a very unique park, youll spend most of your day riding flats, and in that regard be sure to ride the Turtle, Noah's Ark, Kangroo and Auto Race all of these are one of a kind classics.
Finally, if you want to do Exterminator (indoor crazy mouse, very well themed) go early (after hitting Phantom's Revenge) as this attraction has a huge line most of the day.
Don't forget the Racer, too, which was also built by John Miller! It's one of the most fun racing coasters operating today with its single track moebius design and unique layout. It's also the oldest operating racing coaster in the world today.
Kennywood is an amazing park! I'm very lucky, in that I live midway between Cedar Point and KW, so I get to go to both parks regularly. I can't wait to see what KW will do with all that new land. Whatever they decide to build in the future, it will be well thought out, one of a kind, and extraordinary.