Use cat language to discipline. ie Hiss when they're naughty/stare at them directly with big eyes, remove them from the scene of the crime. If you pull gently on the back of their neck when you pick them up to put them in time out, they tend to stay still because it's similar to the way the mother cat lifts them. Similarly purring to him and squinting when you look at him when he's behaving nicely provides reward for the correct behaviour.

I suspect the major part of your distress involves the very brand new leather lounge. I don't have leather furniture for that very reason - too tempting and too easily damaged. Even quick little jumps can leave holes. You should cover it with a thick quilt or blanket until you get a handle on kitty's behaviour.

Would you feel happier shutting him into a room overnight if he had a nice cosy little nest up on a ledge or in hidey hole? Not ideal but when he's a little older and calmer he can earn bedroom access rights.