So only 7 people can survive.  I'm sorry, but I would just let humanity die out.  The gene pool would be soo freakin small with only 7 survivors, that extinction would be a blessing to the species.  I'm sorry, but I'm a bastard.  All of humanity gets to die.
Oh, and thank you Drifter, for bringing me along, although probebly in the long run, you would all live to regret it.  *I kid you not*
If I was to save you guys, it would have to be....*drum roll*
Drifter:  The first guy I ever met who wasn't a totally asshole to me when I was starting out on PMM.  He's also a friggin sweet guy.
Jody:  I CAN'T LIVE WITHOUT YOU!!!!!
Swiftman:  I think we would all die a boredom without you around.
Nightmare:  Cause we need an enemy in the future.
Faris:  Because everyone else forgot her.
Lazlo:  Eh...I guess we need a womanizer
Ensign Scippy, oops, I mean, Jehuty:  Cause we need someone who is expendable.*shot*(your cool man, I'm just messing with ya)
As for me, I would stay behind so I wouldn't have to live to regret my choices for humanities future.