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Progress Technology alignment kits are specifically engineering for lowered cars to help achieve optimal tire wear. Your vehicles alignment should always be checked after you have made changes to your suspension system (anti-roll bars excluded). Generally speaking, lowered cars will gain negative camber which will result in exaggerated tire wear on the inside of your tires. In addition to the negative camber gain, lowered cars will also see a toe change which can dramatically reduce tire life if it's not corrected.
Toe-in/toe-out is very critical to tire wear and should always be checked after you lower your car. The good news is that toe settings are usually factory adjustable, so you won't need to break the bank to fix it.
If you don't have the proper tools to check your alignment, please consult a professional for installation. If you don't do a proper alignment now, you will pay for it later because of excessive tire wear.