Ziggy,
The RRR front hubs give you more steering throw. You will not need any other parts to install the front or rear. You will need to narrow the rear slightly as the hubs have more offset than stock. You will find that the car is more planted with the new rear hubs and you can adjust roll center much easier!
Brain,
The APP brake set is best. You get the pads and disc together. I love it, it doesn't wear and only fades if you're REALLY hard on the brakes. I've run 30 min mains with minimal braking and not felt any fade.
Enjoy!