Dad feeling over stimulated

2 years ago I was a bachelor. Then an ex of mine was found in a meth den and her son was found malnourished and abused. I got custody of him when he was 3 years old. My boy had PTSD and ADHD already and it was bad. He still suffers from the PTSD. A couple months later I met my, now wife, who has 3 boys. Then in January we welcomed into the world our 5 son. I have never been more happy and more stressed and over stimulated in my life. I love my children more then anything and work 12 and 16 hour days 3 days a week so I can be home to help take care of them.

I admit though that it's been a crazy two years and it can be very overwhelming sometimes. Is there anything that could help me? I love being a father but I was kind of thrown into this with no build up. My oldest boy is 7 and my youngest is acouple months. They are all hyper and goofy boys.