I don't think it's a big problem at the beginning as you're just lowering the amount of days in the first lot of upgrades. It's when you get to the final one that you need to be careful, as that is when you will be on that constant loop for the remainder of your time playing the game. I think July mentioned having it on a 12 day loop as of the 2nd day of a season rather than the first. Can't remember why though.