Create working "couple" gender option in Jomsocial 3

Jomsocial has some new gender based features that support Male and Female auto assigned avatars and in 3.1 this data is visible in the backend via graphs. I need to be able to have a third option for "couple" that integrates the same way and auto assigns a default avatar and cover photo for a couple and also will work with the new 3.1RC graphing in the admin backend. Basically the code is already there in jomsocial, just need to modify a bit to allow the third option. I need this to be easy to add on and survive through upgrades of jomsocial as well. This should be easy for an experience PHP user. Looking at $50 for budget.