Depends on what you are looking to use the car for. If all you do is drive on the street (no track days/auto-x) then simple upgrades will provide better brake feel and stopping power without breaking the bank. Adam's Rotors are a very high quality rotor but they will not change your brake's ability to stop.
Simple fixes that will improve brake feel and response are stainless steel lines (try
USP Motorsport; their lines are excellent quality and a little cheaper) and better pads. Personally not a fan of Hawk street pads though many others seem to like them. Also a great choice for street use are EBC Redstuffs; lower dust and excellent stopping power.
Another great product that will take away the unpredictable bite and mushy feel of your brakes is the
Tyrol Brake Stiffening Kit. This is an excellent kit that just firms up the pedal and allows your brakes to apply more even stopping power every time; I can't say enough good about it. I added this to my R and the difference was immediate; firmer pedal and less play or uncertainty in how the brakes will react.
If you are going to track your car upgrades to fluid and rotors would be useful as well; slotted rotors to keep your pads clean and improve initial bite, better fluid to raise boiling point and keep your brakes working longer. But if you aren't tracking it at all then I wouldn't worry about those for now; try the other items first and see how they feel, then add more if needed :thumbsup: