At harvest you will be able to give those inner branches light If you Harvest in thirds. ITs actually better cause you still get the big buds. When you top your plant the colas get small . Harvest 1/3 of the plant at a time. After removingeach third give it a few days for the buds under the top 1/3 to ripen then tak another third. there is no reason to cut up you plant and basically stunting its growth to keep it small and bushy