Sigh. Had a longer, better answer but the computer ate it....
Good responses here about turning to a resource like one of the proven parenting books. It sounds like a plan and consistency is needed and those can provide both.
Just a couple of thoughts I would add:
Ever heard the expression, "Familiarity breeds contempt"? That's part of the problem. The kids hear "no" and "don't" from you all the time and the words lose any power. They hear these words from dad rarely -- and dad, who is not around as much as you are, is a more distant, less known figure, so he has more weight with them. Of course, you can't just spend less time with them in hopes they'll then listen better, but you do need to recognize that they take you for granted. If they hear "no" and "don't" less often it would help; do they, especially your very active older son, have places where they really CAN be active and crazy so he is not getting interested, for instance, in the expensive chairs?
Next, I would immediately do away with ever saying "Go to your room" even to "cool down." I know your son resists this. But when he does go, remember that you are sending him to his own special place -- with his stuff, his toys, his world. It's like a reward for his behavior, not a discipline; it teaches him that behaving certain ways can GET him time among his own cool stuff. (Even if he resists going, once he's there, is he really "cooling down" or is he just quickly distracted by his stuff so he's not even having to think about what he did wrong? Probably the latter.) So use time outs in a neutral and boring place instead, every time -- so he knows that if he does X, the instant and very consistent result will always be a time out. Try the end of a hallway, a bottom step, a corner, but it must be where he has no toys within reach or within sight, no TV he can see or hear even out of the corner of his eye, etc. Totally boring. He has to go there for the set time and if he gets up -- you must return him to the spot and the clock starts AGAIN. Repeating this over and over if he gets up is vital. I won't go into more details but see books by Jo Frost about time outs. (Yeah she was the TV "supernanny" but don't let that put you off; she is great on time outs but you will truly have to commit to toughing it out yourself until he learns that you really mean it when you say, "Time out.")
And as someone else noted: Do you catch him being good and praise him for it much? It sounds as if maybe he's such an active kid that you have a lot to do just to .keep up with him -- that makes it hard to stop the "what is he doing right now?!" mom mode and get into the "Wow, that was nice of you to say to your sibling " mode.It's hard, I know! But less "no," a space where he really can be wild without getting into the good stuff and more praise might help, especially if combined with a very consistent time out policy.
Your husband has to get on board with this whole idea and with the way time outs work, too, or your son will rapidly learn to play you and dad off against each other. If dad is just telling you, "Get tough" -- that means nothing. It isn't a specific strategy, just a general statement, and that isn't going to change your son's behavior.
By the way, since he seems to be wild in the evenings -- is he getting enough recess and active play at school? I notice you live in Michigan so maybe the kids can't get outside at school right now due to weather. But it sounds like he could use an after-school class at a "my little gym" type of place where he can do tumbling and otherwise burn off energy.
The hitting and wrestling and kids getting hurt -- those are troubling and do require a very strict time out combined with instant, non-negotiable loss of NEW things. Losing TV time does not seem to affect him enough so find something else that he will really hate to lose. Yes, he is going to keep saying "I like dad, not mom." But that is a price to pay -- for a while -- in order to curb some behaviors that are going to be bigger problems once he's in elementary school.