for street driving and autox you definitely dont need a big brake kit, so you're good. i'd definitely get some pads and you should be fine, and if you've got an extra $120 in the budget and someone to help you bleed your brakes, then add the stainless steel lines and fluid too. i'm not sure who carries what, but i've got to guess that quite a few of the forum vendors can take care of you
and just fyi big brake kits provide better heat disipation (sp?) to prevent fade, better leverage to stop the car since the rotor is farther from the center of the wheel, and usually better pedal feel for threshold braking. one thing people dont realize is that big brakes often arent necessary as usually the grip of the tire to the road is the limiting factor in stopping, not the braking system. (if you can activate your ABS, or lock up your wheels if you dont have ABS, then your brakes overpower your tires.)
if you want to keep yourself busy for a while, check out the sticky in the suspension and brakes forum, you'll be a pro by the time you finish reading it in a week or two
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http://www.tristatetuners.com/forum/...ead.php?t=7660