Welcome to the best group on the internet!
The AWD with leather interior is a nice find! I have only ever seen one AWD with leather interior. What color is your Vibe? Post some pics... We are visual people.
As for tips, basically take care of the car and it'll take care of you. Biggest thing to worry about with the AWD is leaks from the rear diff (easy to replace the seals yourself to stop them), and the rear subframe rotting out. Another pain point on all is the rocker panels rotting out. If you look in the front of the rear wheel wells, there is a little "shelf" that collects all sorts of debris, and starts rusting out there. Taking off the side skirts would reveal further rust.
Make sure you take care of the rust before it gets bad. I am scrapping my 2003 Vibe GT with 280k miles on it due to rust issues.