The best spot to view the launch from is the causeway. You will be about 7 miles away from the launch pad. You won't be able to see the launch pad, and the shuttle won't come into view until after it launches.
I am not familiar with your camera, and I've only watched launches from the causeway. If you are a novice shooter, I would set the camera on P (Program mode). If your camera has burst mode, you might want to set it on that too-it allows you to hold the shutter button and fire off a set number of shots each time you press it (your manual will tell you how many fps (frames per second) it can fire off in burst mode). This will allow you to get many shots (you can also string them together to make a video clip like the old flip book).
You might also want to zoom in a bit on the area where the shuttle will be seen since you will be so far away. Don't zoom in too much as your shots will be more sensitive to noise and camera shake. You can always go back and crop the photos on your computer.
Hopefully someone else will chime in with other tips/better advice. Have a great time and I hope the launch goes as scheduled!