as for reliability, I'm assuming you're looking at an AP2, if so, that addresses a lot of the AP1 issues.

If you're keeping stockish power levels with basic bolt-ons - intake, exhaust, test-pipe, and tune, then the only thing you'll need is:
-Bigger radiator
-Anti-slosh plate / baffled oil pan

Your brake upgrade will address weak stock brakes.

If looking at an AP1, add to the list:
-banjo bolt / oil jet upgrade to AP2
-AP2 retainers and keepers (or SuperTech Ti)
-seam weld front upper control arm mounting point

 

Check out the group buy I set up for the rear rotors. These will help to save your rear wheel hub bearings.