i had a friend during college who used to workout at 1am in the morning until 3am. then goes to sleep and go to class the next day at 9am. he has a very nice body.

If you are short and have parents and grandparents who are short, don't worry about your height. You'll always be short.

I think I asked the same question before, and if I remember correctly the answer I was told was that it doesn't matter what time you work out at.

Only problem would be that if you workout later at night, you'll more likely be tired from the day. So your intensity might drop when lifting weights. If you were to take a pre-workout stimulant, you have to time it properly so that it won't affect your sleeping after your workout.

Oh, try to get something to eat after as well.

It will affect your sleep. You need enough good sleep to repair, grow and rejuvenate.