Audio and Exterior/Interior mods

After the preformace add-ons, hopefully soon, I plan to replace some parts in the exterior/intierior of my 99 4 door blazer. My plans include, clear corner lights, LED signal bulbs, and (possibly[sp]) a Xenon body kit. For the interiored I was thinking new gauge faces, new pedals, and 2 12" subs with an amp. I have a couple of questions about whats good and what's not. First off, the body kit; I would like to lower the blazer about 1"-1.5" but I don't have the equipment to install it my self. So I found that body kit, but it looked odd on a 4-door car. I was hopeing to get an opinoin from you guys about weither or not to to get it. Also the speaker-sub combo I'm looking at is a MTX kit with two 12" subs and a MTX T251D amplifier. I was wondering, b/c I have no clue when it comes to audio, if that would sound pretty good. Here (http://www.crutchfield.com/S-avkZsxcqZt4/cgi-bin/ProdView.asp?g=208250&I=236TP12X2) is the link to the set. It's not a bad price, $270, if it sounds pretty good. BTW: I wanted to throw this little pice of info for peolple who don;t know about Liquid Glass. It dose give you a great shine but it requires alot of up-keep or it can give you the 'spider web' effect on the paint. The best wax, that I was told, is Meguiar's NXT Generation Tech Wax. Thanks for the input.