Awesome idea.
For some reason the storyline reminds me alot of doom 3... Alot of science/bio stuff being worked on... teleporters.. guy tries and ruins the work... aliens and zombies come through the teleporter... don't ask how doom 3 reminds me of your idea.

Sounds like a big project.
Will there be any custom models?
I have been studying and learning to make models... I'm working with a team to make a classic source remix of an old hl1 mod called Master Sword...
http://master-sword.net/community/index.php
Game has alot to be made.

Great work so far though Zero.