I would not go with airbags for a civic. You can try a good set of coilovers. Tein will be the best, but retail for around $900. You could go with skunk 2 for less, or even HP coilovers for less than the skunk2's. Despite what most say, both skunk2 and HP make good sleeved coilovers. If you can afford it though, go with Tein.
As far as body kits go, just get a nice front lip and maybe some side skirts. This will always be a styleish look for honda's, and does not draw unwanted attention.