One of the most pain in the ass things of having a lowered car is finding somewhere to get an alignment. Normal tire places will basically tell you no way
you are getting on their machine.
Luckily for me Revworks is around the corner from my house and they do performance alignments on cars all the time.
Here is my before and after setup. They did a mild performance setup that would allow for good daily driving. If this does not show you how important getting an alignment after suspension work I don't know what will.
Check out Revworks for all your suspension needs and more.