Welcome, and thanks for joining Michael.
I’ve always used VAG’s brand - Quantum - and see no reason to try anything else.
Check that the grade required is 5w/30. I always buy from reputable sellers on EBay, and order the Longlife 3.
Would suggest using Mann or similar (German branded) filters, and yes, I would change every two years. I cover about the same mileage in a non- Audi, used only for summer months, and that is my regime for that car.
Kind regards,
Gareth.