For your first time, you're probably going to be going slowly enough that it won't matter much what brake pads or fluid you use. You'll be driving very gently and learning the line.
However, if you've got any related experience (karts, auto-x, etc.) and think you might be ready to push things a little on the first day, brake fluid with a fairly high boiling point and a set of fairly aggressive pads wouldn't be out of the question.
Are you planning on doing multiple events this year? If you've got 3-4 plans, you'll probably find that by the 3rd or 4th event you'll be hitting the limit of stock pads. Even if you're not getting pad fade, you'll start eating pads very quickly.
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1995 3000GT VR-4
1994 Mazda Protege DX (faster than you think)
2002 Honda CBR 954RR