More than likely your front suspension is not free and that will account for some of the ride height difference along with the tires.
Here is a link to mark Paynes site (
http://www.12thrc.com ). He has a lot of good info on setting up a Carpet Knife and some of it you can apply to your car. Look for the info on setting up the front suspension and that should help some of the problems with your ride height.
Don't get overwhelmed with what he has on there. Take what information you need and do what you are comfortable with and enjoy your car.
Greg