J.W.
1) Your older two are wanting your attention and they got it. When you're nursing Zephyr, pop in a dvd and watch it together while you're nursing, multi-task here for awhile. There are some serious jealousy issues going on.
2) While you may clean and do homework because you love your husband and your kids, you need to instill a sense of teamwork and 'we all do around the house' because we need to help one another and ourselves. After the destroyed their rooms, I would have given them the chore of putting things back together to the best of their abilities.
3) I don't know how much time elapsed between the misdeed and the time Dad got home, but there is a time limit to the effectiveness of a 'timeout'.
4) Carve out time in your day to work with your boys picking up their toys, sorting laundry, making their beds, etc. Work with them. Yes it's going to take longer than if you had just done it, but you're teaching and cleaning at the same time, as well as spending time with them, which is more important.
5) What you boys are doing is normal, it's a way to get your attention, and even 'bad' attention is attention and time that you weren't spending with them. It's hard, but make time for each one of the individually to do something with either you or Dad. I made sure that we did that. I took my daughter to a movie while Dad had the younger brothers at home. Or Dad would take the oldest boy to the Museum of Flight while I was home with our daughter and infant son. When the kids hit 10 yrs of age, I took each one to DC for a week of visiting, touring and learning in DC. It was all about them and doing the things they wanted without having to take turns to ask questions or waiting for a sibling to do something.... when we got home, they shared all they saw, all they learned, all they did. The 2 left behind were so anxious to see them. And as the next in line got to go, the one before gave them ideas as to what they needed to see and do. Each trip was unique unto them, there were different opportunities on each trip. And as a parent, it was the most rewarding of times. It's an album full of Kodak moments. The conversations, the dreaming, the sharing. You don't have to go to DC to get this, just carve out the time to give them each their one on one, it makes a huge difference in their relationship with you and with each one of their siblings. ps I've taken my youngest nephew to DC and my 3 kids gave him all sorts ideas and suggestions on where to go, what to see... and it developed a common bond between the 4 of them. His younger sister is now pushing for her trip to DC with Auntie. And then I have a soon to be 18 yr old nephew (same age as my youngest) and he never expressed an interest in going or doing because he's an only and gets to go to so many places with his Dad, but he wants a trip with me to see and do what the others have, so they have something in common and talk about.
Enjoy them individually and collectively. It's awesome!!!