Con

Well i am not aware of your stats and i certaintly dont know much about contest prep but personally me entering the final 6 weeks of prep i intake 300p 50f 50c on non training days 100c on training days, every 5 days or so judging using my own eyes and how i feel i up carbs to 300c for one day i would NEVER intake 600c thats for damn sure.
Your probably a lot bigger than me though (i am between 202-208lb depending on a few factors at 5ft7.5)