The toughest fits for me were in this order: Wicked Twist, Topthrill Dragster, Millenium Force.
If you can fit into TTD and MF DO NOT PASS THEM UP. Even if you don't like those types, you've likely never road a coaster like these, they are 100% badass. Take the extra 10 minutes in line to ride the front row too, TRUST ME. The maverik is also VERY badass and its seating is easy, they built the seats with plenty of room for us fatties.