You might need some reference images to go with those. I mean, the blueprints are essential, but they can hide detail, especially when they're not a complete front/side/rear/top set of images.
What you need to worry about, is the precise shape of front fascia (the fenders hide it from the side, and you need nice reference images for that. Also, the shape of the rear, (you'll need to approximate to make the rear taper in correctly), and most importantly, the shape of the roof).
If you haven't modeled a car before, you might want to start with something easier, especially if you only have a week.