If buying junk tail lights makes you happy, then by all means do it! There are ways to keep them dry. Your the one spending the hard earned cash, buy things that make the car fit your personality. From the sound of this thread, your trying to make your car say "look at me, I am cool!". When it comes to appearance mods, HAN's answer will generally be conservative. People around here prefer improving the look of a stock body Integra without swapping bumpers, lights, big rims, or bright paint jobs.

When it comes to product quality and performance, listen to the people here. They will help you set a plan, and attain your goal's without all the headaches local word of mouth will bring.

I think you should start researching the basics first. Learn about your cars engine, and how everything works. Do LOTS of preventive maintenance. Your WHP goal is within arms length, probably without changing your pistons. Find out what parts it will take and learn about tunning. By the time you've accomplished this, you will be addicted, and I seriously doubt your still going to want all these useless appearance mods.

IMO, you should start with finding an OEM quality lip. Get some form of HID retrofit setup, and goto work on your suspension. These three things will set you back ~$1500 when it's all said and done. You'll be surprised how much better your car will look when you stand back and realize that your money went to something worth while.