Snarf up the lugs with the impact gun, then use a torque wrench (beam or clicker if you don't have a fancy air one like NM51 mentions). The good tire shops do and you'll be happier if you do when you get a flat.
Now, Fumbles, if you REALLY want the cool factor get yourself a butterfly air wrench! Its a small squarish looking tool with a 3/8" drive. (if your kit didn't come with one) It has a butterfly or rocker switch on top that say F on one side and R on the other. With a socket or short extension you can really whip apart assemblies with it, and then stuff them back together, but final tight with the torque wrench (if you care). The butterfly is faster than the air ratchet, and my harbor freight cheapo even has a valve to adjust how much torque it uses. It was like $20 on sale.
I just used it to undo-redo the brakes on my heep and it saved a lot of time when dealing with hubs and backing plates.
Then its on to the D/A sander when you decide to paint the 46 prettier (if ever - looks good now) spot sand blaster, and air hammer. The air hammer is fun to bust spot welds and chisel off old exhaust bits that are a rusted mess. The hammer will bust lots of welds in fact.
Air grinder is also handy...
