That's plenty. I'd suggest 100 grams on low carb days. Breakfast and post workout. Depending on when you workout. Breakfaast, pre and post workout.
I would lower your high carb days to 250 to 350.
Depends on what your goal is. If i did the math right you weigh 231 pounds? Depends on your what your training day looks like. At 13% bodyfat i could only assume you were looking to drop bodyfat and hold on to your muscle and maybe build more if possible?
How many off days do you have in a 7 day week?
What kinda carbs are you eating anyway? Theres a difference between white potatoes for breakfast and oatmeal.