Um, for the time you put in... spend the money and buy some aircraft aluminum stripper. It works wonders and will strip anything but chrome off aluminum. definitely worth the 10-20 bucks at advanced.
Directions:
1.) WASH WHEELs
2.) spray or coat aluminum rims with stripper
2.5.) scrub lightly for a minute with a brush
3.) let sit for 30 minutes
3.5.) drink beers
4.) rinse off with a hose
4.5.) more beers
5.) take relax and enjoy all the time and effort you didn't have to put out
Caution:
It will strip off any and all clearcoat, paint and impurities on wheels... so if you like that clearcoat don't use. But I'm gonna go out on a limb and say if you're using steel wool your stripping the cc anyways.