1.) Lights- Don't bother with cheap-shit Xenon wannabe knockoffs. I had them for a very brief time, and if you're unlucky enough to be out in the rain you're blind. Probably the best thing for you, and I'm using them now, is the Sylvania Silverstar. Plan on about 40 bucks for a set, but trust me it's worth it. Complaints with them circle around short bulb life (150 hrs) but I've had one of them in for a year and a half now.. (the other got knocked out by the bumper of a minivan

but it was replaced and it's about 8 months old) Very bright white light and no hassles from PoPo.
2.) Spoiler- Honestly man, I wouldn't bother, you car probably looks good enough with tint and Altezzas. As far as I'm concerned they're cop-bait, particularly the tall aluminum ones. It's all about personal choice, however. Ground effects.. you might want to check out the kit drewscam just got. Big-time bitchin'!
That's all I got at the moment, welcome to TN
Steve