Huge Plot Questions... Possible Answers :)

3 things to think about.... At the end of the movie the space jockey climbs out of his pilot seat and dies... how the heck did he get back in it in the first movie? my theory was that since Xenomorphs take on the traits of their hosts, could he have been smart enough to put the jockey back in the chair and crash the ship on another planet for Ripley to find? After that, could the alien then have become a queen, found a suitable spot on the ship and lay the first true eggs, and in the process destroy all the canisters and first gen. facehuggers to guarantee the eggs would find a host and survive. after which she died but was able to supply the eggs with plenty of first royal jelly (the black goo) :D But the one thing i can't piece together is if the first true alien is born in 2079 how did the predators in AVP plant the eggs in the temple in 2004? :S oh and one more thing... WHY THE HELL WASN'T LANCE HENRICKSON IN THIS MOVIE X(!!!!! If anyone has any other ideas i would love to hear them :)