The team recently did our 100th and it was, Rattlesnake Mountain GCGWD1. But I noticed it has been temporarily disabled. Too bad, the best view of the lakes region. Next one might be, Pez's Challenge GCP5H4. We have not done it yet, but all you have to do is read the logs. Very interesting. Fits most of your requirements. Don't forget take lots of pics. Happy caching and good luck.
Why not live life like it is your last day....instead of pretending to be a member of the Peter Pan Club and believing you will be around forever.