Buy the Bentley repair manual
Flush and replace fluids (heater is not putting out as much heat as I think it should)
NGK 6962 spark plugs
034Motorsports Coil Conversion & ICM Delete Kit(should I replace the harness as well?
Snub and engine mounts (thinking Stern)
APR Timing belt kit
Seafoam the intake manifold


I read your comment about 'the belts.' You must do the internal time belt, and to do that you need to pull the front bumper, etc. and the outside acc belts. the rest of your issues are 'wait and see.' the audi has an excellent computer on board that tells you what is broken. read the codes. if it aint broken, it will be soon.....so leave it alone. good luck with that heat problem. if it is the internal heat exchanger, that is a bitch.