Yep. Simple as that. Wait a few weeks for the springs to settle then get an alignment. Look at the specs and see if the camber is out of recommended specs. If it is then you need a camber kit. A lot of people tell you to get a camber kit without checking to make sure if it was a problem in the first place.

In general a 1.5" or less drop will do without a camber kit but still look at the alignment specs. A previous problem with camber could be augmented by the lowering. No harm in checking.

And yes, negative camber assists with grip since it widens the contact patch with the ground, but don't be led to believe that it's always better because at one point too much will be bad.