Congrats. You will love the new bike. I sold my '02 200 with PC exhaust, plus other goodies (I thought it was was pretty quick anyway), and picked up an '03 EXC 300. It's amazing what 50% more displacement will do. These KTMs are so SOLID it blows me away. That, and the boost factor is worth the extra cash. My only complaint is that it takes some real getting used to. After a 4-6 hour ride, my arms are smoked. Most of that comes from hanging on for life. The bike will come with the NZOH needle. Put a couple of tanks through it, then switch it with the NZOI needle that comes in the carb tuning kit. It moves the power lower in the rev range and really open it up. That's with the stock 175 main jet. I'm not sure of where you live (altitude wise); but quite a few guys are finding that it works well. Have fun on it. And do remember to keep a finger or two on the clutch.
dave