I just finished a season of rugby league while on the AD and it took me ages of changing things up on my carbloads to get to a point where I felt good while playing and still had energy for the gym that week, but what I think ended up working best was to have one good carb meal the night before (usualy a big feed of pasta and vegies) and then the morning of the game I would eat about 3 hours before (to give me time to get over that slugish feeling) just a bowl of oats and some fruit if I needed it before I went out. When I finished I always tried to eat big meals to replenish glycogen so I felt good for training that week. But I think youre best off playing with your carbloads a bit to try and work out what works for you becuase when youre getting it wrong you'll feel shit the whole week and I don't think running out of energy near the end of a fight would be fun.
But thats just what I think, 3 five min rounds are a different kind of endurance to 80mins of football. It'd be interesting to see how you ended up in your fight, if you find a good way of doing it I think your energy will be good and you won't need to worry about the serratonin just as long as you don't eat a heap of sugar or something I think you'll feel good.
Just curious man, whats your experience been with cardio and endurance work on AD? You must do heaps to be in good enough condition to fight? I know people say its not a good diet for people who have to have plenty of endurance becuase you need the carbs but i've felt good for most of my games and through my running and stuff.