Sounds/looks incredible David! I would probably cut the CC numbers by 2/3, personally, at least in an initial stocking. 100 CC per acre is kinda high, but quite doable. They will also become a huge biomass in short order even if they can't spawn successfully, taking up resources/space the LMB could occupy along with potentially becoming a tough competition for your LMB! CC are cheap and easy to add in higher numbers at any time, but a real bugger to remove if overstocked!!!
Have you already got enough over abundance of aquatic vegetation for the Grass Carp to eat without removing too much wanted vegetation?