Just found one answer after checking the search again. Still couldn't find anyone with comments on the b303 and pulleys but one asnwer: Don't put the under-drive alt pulley on. Well, that's one option because it doesn't net any HP anyway. Your accessories won't hurt as a result.
you could always get a better alt. if that one isn't supplying enough power. but unless ur in need of more, shouldn't make a difference. you might see it in the headlights, but shouldn't be a problem
I recommend the "F" cam . pulls alot harder up top and sounds great at idle, I also have the pullies on and when running the air at night you can notice a little drop in lights at idle , but no big deal
I don't think a cam should affect the accessories much, as long as your idle doesn't go down. Maybe I'm wrong. All I know is with my stock cam and pulleys, I was draining my battery real bad with my stereo. I finally swapped back to my stock alt. pulley. Someday I'll get a better alternator, but all my money is going towards my engine buildup right now.