OK, to answer the question about hte plastic bags and styrofoam....
Black plastic bag is full of polyfill, it and helps with road noise. Leave these in place.
The white styrofoam is impact protection, and it is against DOT regulations to remove them. You are subject to a $100,000 fine if you get into an accident and they are found to not be in the vehicle. I would reccomend you not remove these either.
BTW, not pulling that stuff out of my ass, I called the Honda dealer, because I wanted to just take the styrofoam out too.....not a good idea.