my a4 is a base model. I just picked up a "sport" suspension(shocks/springs) package pretty cheap. Everything should be in pretty good shape. Is this a DIY project with correct tools, or would I be better off paying for it to be installed? If so, what is a resonable rate/time? TIA

Air tools make things quicker and easier, but you don't need them. I did mine in about an hour and a half on the lift.

should need any special tools if they are coming as an assembly.