Equivelancy means having any cert past OW and 20 logged dives including navigation and deep diving. The OP thus qualifies. I would reccomend taking some of the more challeging and educational specialites like wreck, cavern, nitrox, and also taking Rescue. If you want to get into tech diving there is plenty to learn there. You could also take some of DANs dive emergency type courses, or equipment focused courses from PSI. You can also "go pro" and become a divemaster.