With any chelator, you will have some redistribution. The more you can minimize the amount of redistribution the better. Redistribution at the end of a round, your body can probably handle that. Redistribution every night? That's a bad idea. Also, not taking the chelator at night means that you lose the chelating effect every night and have to restart in the morning. That will make the chelating less effective (probably ineffective).
Getting up at night to take a chelator is not as hard as it seems. I set my alarm for 4. I wake up, reset my alarm to wake me up at 8, take the chelator and go back to sleep. That's it. I've managed to do it countless times in the last few years.