I am not sure about getting a rear camber kit if i get 18x7.5" +43mm rims and H&R Sports.

I know for sure that a person I know has a 1.85" drop with coilovers and 18x7.5" +42mm wheels rubs a little with rear camber correction. I gueess I should get the rear camber kit and see how far it can be adjusted before it rubs.