Ooooo Predator / Sith Lord... There is an idea...
http://www.swagbucks.com/?t=i&q=predator+sith+lord
So, speaking character level wise, originally, I start my games at 5th, but if you guys desire, 1st is ok, since I give extra hit points due to deadliness of weapons.
I am not opposed to weird creatures at all, we just need to adapt them to the setting. It is a bonus that with Gestalt, you can put racial levels on one side, while still maintaining your main class on the other.
I am thinking, if you desire a semi-evil campaign, would you like to work for the Emperor, ISPD, one of the Houses of Asamet (Red, Blue, Green, Black or White)? Or you can even be freelance, though you two would have to decide how you agreed to work together, and what your goals would be.