Ok, so I just did the floor and firewall with about 4 layers of jute. I also took the polyfill from a whole pillow and filled some areas of my dash with it. Wow, what a difference the jute made! This is awesome. It was definitely noticeable and probably the most effective sound proofing thing I've done to my car so far. Maybe not mercedes quiet, but perhaps a toyota camry kind of quiet.
The loudest thing in my car now is the low growl from the engine, and I have no idea how to get rid of that since I already treated the firewall and dash. The engine noise overpowers everything now. There is also a faint grumble from the tires, as well as wind noise at highway speeds. Thats about it.