I disagree on several points.
Cross drilled rotors WILL crack if driven on the track. Bad idea. I've never seen a set of cross drilled rotors not crack, but then most track cars don't used cross drilled rotor because they crack.
Stainless lines are probably one of the best bang for buck upgrades for a track day. Above 8/10th brakeing effort, your pedal will be linear. With rubber lines, your pedal will require esponentially more force to stop at the same rate as with stainless lines. They do not require uprating your master cylinder or calipers to have an effect.
For fluid, I alternate between ATE Super blue and ATE gold. The color change makes it easy to tell when you've changed out fluid.