Lots of things to consider once you start changing parts from stock. If you deviate too much from stock you can affect axle and suspension parts and increase wear and tear. Then with wider tires you may affect gas mileage and stopping ability as well as rubbing issues, with larger diameter tires you also affect odometer and speedometer so you may have to get them re-calibrated.
Good thing about using larger rims is if you stay above 17" rims you can do the brake conversion from small brakes in first gen AVs and switch to second gen AV larger brakes. You can read about the conversion in the brake section.
For selecting tires and rims you can get lots of info from reading older threads on this site or even look at sites like https://www.tirerack.com/content/tirerack/desktop/en/homepage.html
Good luck with your search for the setup best for your budget and needs.