1. Technically, when you join a dating site, you are joining a group.
2. Wanting to date a genius, does not necessarily mean you are a genius. I can understand backing away from Mensa.
3. Just put what your looking for in your dating profile - "fat Asian female, poor eyesight (no coke bottle glasses) with an IQ < 145, face mask and an Eppendorf pipette". I am confident you will get thousands of likes.