Mazda 6 questions...

I just bought my first car that I've saved up for the past two years. Pretty stoked on it, it's a 2004 Mazda6 GS GFX I4. I don't have tons of cash to put into it (yet) but I'm looking into getting a CAI, some nice fog lights, maybe change the exaust tips to get a little bit of a better sound and maybe a few changes to the interior... Any comments would be great!