Welcome to the forums, can't wait to see what you end up doing with your car.
Centrafuse is nice and all, but try out some of the skins in Road Runner. There's a few themed for subarus, and one by another forester owner and I think one of the nicest looking skins available. It's not finished just yet, but here's the progress so far:
There are a few other that may interest you as well, so look around and see what is out there.
There is a lot of things that RR can do, and since it's free it's really no risk.