Lefteris Garyfalakis

Hi guys! I'm new here and have little experience with cars.

I want to upgrade my car's stereo to something newer and better and I need your help. The car is an Audi A3 '05 and has an Audi concert which looks like this picture:

I plan to buy a Sony MEX-N4300BT (or similar) to avoid the 2din conversion as it isn't worth the trouble. The problem is that I don't know what adapters I need for the aftermarket radio to work. Is something like this going to work? Do I need a canbus adapter? Do I need to tap a wire into the fusebox? Also will a removal tool come with the radio? Thanks!