I was looking for something like this when i was working on my drunkard. Can't believe i missed this *cries a bit*. Looks great though and i will tell my friend about it who is currently working on his title!
I use perfect alarm clock for pc, but the only downside is u have to manually insert all the times beforehand.
Takes about 90 seconds to set up 1 hour, so 6 minutes for 4 hours.
But u can choose your own alarm sounds.