Some people can handle a lot of carbs, while others need to keep carbs lower. The best way to see what you need, is to track your diet and watch your progress. Lets say you're eating 1.5g of protein per lb of body weight and .5g fat. Then maybe start with 150 carbs and watch how your body looks over a 7 day period. From there, add or reduce. Another factor is WHEN you eat carbs. You are more likely to use them for muscle building around your workout.