I think I would care who joined me but who I choose would be based upon character rather than beliefs. It would be difficult to choose because I am a Baha'i and we don't see anyone as 'better' than anyone else, but if I had to choose two people one might be an atheist and one a Baha'i because that way I would have the best of both worlds.
So I think you need an option #4:
4. You can choose two people and one can be a religious believer and one can be a nonbeliever.
That is not really the idea behind what im asking
Its about whether you favor/trust or would feel more secure amongst people which share your beliefs rather than someone that didn't and if you don't care, then the answer should be number 3, however you have no clue which people you would get with you, so it could be anything.
I don't think a lot of people would prefer being the minority given no other information than someone else's religious background. Personally I would choose number 1. And the reason, I would choose that, is because I think it would be easier for me at least, to focus on what would be important and not on whatever religious stuff, someone might bring. Again, based on the conditions, I think at least working from the same basic philosophy on how you view the world can be beneficial.
My concern with choosing the other options, is not especially due to them being religious, but the risk of them being religious fundamentalists, because I would see no way for me to get along with them, and I at least know that atheists ain't that.