My Alignment specs - Please Help

[FlawlessZ]

The guys at a local alignment shop put my car on the alignment rack and the tech printed the sheet took it to the owner and they started convincing me I need control arms, he said "damn man since your lowered you have almost 3 degrees camber!!!" I can fix your toe but its going to be useless. I told him that i thought the rear had factory adjustment's to take out a bit of camber and he totally ignored my response and said trust me man we know what we are doing ill call you on Wednesday you need those parts...

My camber is a bit more that what i should have I think 2 degrees would be perfect...and my toe i want 0 front and as little as possible in the rear... Opinions?

ALSO, I plan on getting thicker tires for my next set, I wont screw up my alignment specs if i get a different size tire right?