I agree with spaceace...
I would recommend going for the Big One or Infusion first, then the rest will seem tame and you will be more up for trying larger rides.
I am terrified of heights, my first coaster was the Big One, the reason for that.. I thought if I am going to try to beat this fear then go for the biggest ride in the park
Turns out I love the adrenaline rush more than I am scared of heights....
The lift still scares me to half to death no matter what coaster I am on but the rest is well worth it..