Yes, but like I mentioned in the first post, it's going to be awhile. I'm going to have to learn AfterEffects and Vegas from scratch, and plan on doing some "easier" edits that won't require anywhere NEAR the FX I want to do for this.
re: chestburster scream:
I agree with you there, Bingo... I can see editing out the second mouth opening, maybe slightly slowing down the first mouth opening to accompany a different (slightly longer) scream.