Sups guys I'm currently dropped on s-techs. I have a spc rear camber kit and went get an alignment. The guy told me -3 rear camber was the best he can do without throwing off my toe. Does this sound right or do I need to go to a more experienced shop.

 

S techs are a pretty deep drop for springs, but should be simple to get the camber well in spec as long as you have the rear toe bolt kit. If you only have the arms and not the SPC toe kit than that would be the issue, if you have the toe kit and it's properly installed the shop doesn't know what they're doing.
I'm dropped to zero gap and have my camber at -1.1 and toe -.05 w/ SPC arms & toe bolts.