DangerousDan said:
"Hi Coasterpunk... is that CoAsTeRDaN the Alpengeist legend?"
Yep the one and only CoAsTeRDaN.
For short park stops I'd say you can probably knock all the coasters at Knoebels off in about an hour the Whirlwind and HSTC are usually nearly walk ons and Phoenix and Twister may have a 20 minute wait. You also want to check out the Haunted Mansion, Bumper Cars, and ledgendary Flyers in your time there. Food is also very good and cheap compared to other parks.
Dorney is about an hour and a half from Knoebels so you could hit that the same day as well. get to Dorney befor the water park closes for your shortest wait times. Hercules, Thunderhawk,and Lazer usually have the shortest lines. Expect your waits to be longest for Talon and Steel Force. Other things to try here are the Skyscraper and possibly Dominator. I'd skip Dominator if you went on the one at CP though.
From Dorney you can easily get to NYC and Coney Island. It's about a 2 hour drive if that from Dorney. They are open late so you could possibly hit all 3 of these in a day.