I tend to be more of a go to bed at 10 to 11 PM.
Been here 12 Years and done way better than I thought I would with the night stuff. That being said, I fly day time stuff as much as I can. If you don't care about days off, you can do about a 1/4 of the year doing day flying on the 757 at 50% Seniority or better. Or at least I was able to manage that. On the 767 it has a lot more day flying, but it is a smaller fleet so you need to be more senior to get it.
Regarding the sleep. I'm a commuter and typically commute down to Memphis the morning/early afternoon before a night trip. Go to the Crashpad/hotel and go to bed early, shooting to be lights out by 7PM. Sleep until 12AM-1AM then head to the airport for my trip. Once to the layover, I'd sleep again. I would get into the cycle of night flying fairly quickly during the week. At the end of the trip, rather than hub turning AGAIN just to commute home, I would go to the crashpad and sleep in. Get up the next day and commute home in the afternoon. My wife likes me better when I do that.
On a typical junior line holder/reserve line month, you are going to give up about 4 Days off doing that, maybe more, but, honestly, I felt so much better flying at night. I don't know how guys commute into/out of night trips, but many do. When I daytime fly, I come to Memphis on the evening jumpseat, go to the crashpad/hotel and sleep normal. Once I'm done with a daytime trip, I of course just commute home out of my trip. Another good thing about day flying!
Night flying doesn't really bother me. I'd rather fly during the day, but by doing what I mentioned above, I really felt pretty good. Sometimes you are going to be tired. If you are too tired, call in Fatigued. It happens.
Commuting sucks, and sucks more when you are junior. As you gain seniority it gets easier. But, in reality, commuting sucks at every airline when you are junior and gets better with seniority. Also, with Deadheads, the commute gets easier. Also with Deadhead's, our contract allows us to come in early to the layover city. If the Deadhead is a Monday Deadhead and I will be night flying I often take the last flight of the night to the layover city on Sunday and sleep in on Monday. That helps a lot too.
My advice is stay senior and don't chase the money. Just because you can make a lot of money doesn't mean you have too. Over my time here, I've stayed around min guarantee, for the year that comes to about 75 Hours of credit a month. (Averages of 68/85 Min guarantee over the course of a year). So, take the pay rate for years of service and do the math using 75 hours each month.
Try not to fixiate on the fact you fly at night. It is a night cargo airline. If you think it is going to suck to fly at night, it probably will suck. If flying at night is an issue (not certain if you are hired here or not) then FedEx probably isn't the place for you. There are some nice things about night flying and weekend layovers can be a lot of fun! Best advice, sleep when you are tired, eat when you are hungry and try to get a little exercise in the middle of that IF you can. I also make it a point to get an afternoon nap. That is huge for me when night flying. Again, fly daytime stuff when you can.
Personally, when I was especially junior, I chose to do "B" Reserve, daytime reserve, rather than hold a crappy nightime line. I also chose to fly afternoon out and backs (also known as a day trip or turns at other airlines) as opposed to flying crappy night stuff. Of course, doing that requires keeping a crashpad and maybe giving up some days off.
I'm into quality days off as opposed to quantity when talking non vacation months. Totally opposite when it comes to vacation months. I go for max days off during vacation. On that subject, I USE my vacation and NEVER sell it back. I don't get the selling vacation thing, but you can make money doing so; I just personally value my vacation more than money. I love to come in and fly, don't get me wrong, I just love my time off too.
I kept a crashpad for my first 5 years, got rid of it after that. Just use hotels now. Bottom line, I'd rather give up a few hours/few days to feel better overall. I was on the younger side when I got hired so I felt it was important to pace myself on the night stuff. That has been my logic in doing what I do. Hope that helps!