I'll repeat what I tell everyone that wants shorter stopping distances - buy better tires.
Drilled rotors are more prone to cracking than are blank or even slotted rotors since the majority of drilled are drilled after they've been formed. Top end drilled rotors are cast with the holes so less strength is lost. If your son still wants the look of drilled I suggest going with a dimpled rotor.
My recommendation is to go with a blank faced or slotted rotor. I ran a combination of Powerslot rotors and Hawk HPS pads on my 240SX and that was more than enough for the street and some mountain road driving.
Braided steel lines will firm up the pedal feel and if you're really looking for some reassurance, though it's overkill for most, you could load up the brake reservoir with DOT 4 fluid, ATE Type 200 is a relatively inexpensive choice. Be advised that the higher DOT rated fluids are more hygroscopic and will need to be changed more frequently. No DOT 5 FLUID! It's silicone based and will kill the brake system. DOT 5.1 is fine, though for a street car it's completely unnecessary and from a cost-benefit viewpoint it's pretty silly.
Welcome to NICO!