Not sure how fast you will ramp up during the night though (if at all), e.g. if the bandwidth authorities measure your relay during the day and get a very low number.
For me, now it takes one-two hours to reach its full potential, but in the beginning it might take a week or more (given the same day-cycle running) to get there. I am running this for half a year, though, but the same happened >2 years ago when I lost the files with the previous relay.
Vlad