Just remember that you can't just throw foams on there and expect to reap the full benefits. Foams allow you to have a more agressive setting for your suspension because there is less "roll over" for the tire and breaking the bead is less likely. If you can tell me what type of surface you'll be running, I can try to help you from there. I used to run a NTC3 at the track.
BTW, keep the stock springs. They work very well I think it's copper in front, gold in the rear. Caster, keep it at stock; Tire shore depends on track conditions; I run .5-1 degree +toe for the front; 2 degrees toe in for the rear; -2 degrees front and -3 camber for the rear; Ride height keep at 5 1/2 mm to 6mm; Droop at 3-4 for starters. Roll center can't be adjusted on the NTC3. If you have sway bars ... 45 degrees on the front blades and silver spring in the rear. Keep your shock oil at 40 wt all around for beginners.
As I said, let me know what type of surface as well as your driving style. To accurately make these adjustments, you need a setup board like the INTEGY or HUDY board. A tweak station will help with chassis balance. All this an be expensive but really called for if you want to be competative. If you're bashing in a lot, get an RPM gauge and take it from there. The back of the manual has the standard setup for foams as well as rubber tires. Follow those guidelines.