No, it's not normally hyphenated, but when you create a compound out of it, it has to be. It's like the difference between "He was in an ill temper" and "Feeling ill-tempered he threw the meal away".
Not sure about the 1am thing. The consensus is to write all figures under ten as words, but in this case it might be one way out of the problem.
Not sure about the 1am thing. The consensus is to write all figures under ten as words, but in this case it might be one way out of the problem.