Per the carb discussion. there is no timing for it. It is training/goal dependent. The most widely used is Heavy carbs on your 2 biggest or most important lifts a week. Example:
1:Squat day - High carbs
2:Chest - Moderate carbs
3:Rest - no carbs
4:Shoulders: Moderate carbs
5:Deads/Back: High carbs
6:Rest: No carbs
7:Rest: No carbs
This is the most efficient way to measure. For an idea, a male at 12% BF at 225lbs should consume 1.5-2g protein per lb of BW, and roughly 400g of carbs on high days, 250-300 on moderate days. If you are doing cardio on rest days, consider consuming 40-50g of simple carbs. I always maintain adequate vegetable and fruit intake because my blood sugar goes to shit quick since I use GH.
Cutting carbs on gear is stupid IMO. You have a higher ability burn fat and expend those calories and build. So cut carbs when you aren't using AAS, but this is just my opinion.
Right now I eat carbs only in the morning/early afternoon and preWO.