First off, the A4 is a great car, you will love it. I just traded mine for a different Audi model, but I will always love the A4. Mine was a Premium Plus. That was the only thing I grew disappointed in. I should have bought a loaded Prestige and would recommend that to you. When you have an Audi, the extras that come with the Prestige package are just a lot of fun and well worth it. I’d have gotten the Driving Assist Package too, with adoptive cruise, and lane keeping. I loved the heated seats and steering wheel. I would stay with the 18 inch tires, the bigger tires mess up the ride a little. I would not get the sport package, again the sport suspension was just too harsh for normal driving. Other than that you should be able to find a used 2018 or 2017 easier than a new 2018, at least that’s the way it seems around here. Then just have fun. That car is a little rocket and just great in traffic, but on the open road it also has a great ride.