If you're wanting to reconcile, I definitely wouldn't ask him to move out, but asking him to leave and come back when he's cooled off is different. I would read what you wrote to him, or at least the last two paragraphs to help communicate what you feel.
But that aside, I felt exactly as you are describing about 1 1/2 to 2 years ago when my husband and I were having a rough patch. Every little disagreement turned into a big deal and ugly feelings. I didn't want a divorce (I'm committed to my marriage, especially when logically I knew my husband is a good guy and it's not like I'd run from this relationship and miraculously find someone better) but I certainly didn't like him very much. I went on a trip to visit my cousin and when I came back he was crushed that I didn't act excited to see him, just the kids. He said, "I thought a little break would help, but when you look at me I feel no affection, just hatred coming from you." And it was true, I didn't even like him or being around him. He is not tender or sensitive or understanding AT ALL, and he traveled every week for work, which also took its toll on our marriage. As I was venting to my cousin about everything she said, "Why are you even still with him? He sounds like a jerk and you sound unhappy?" The question jolted me. How preposterous to suggest I leave him because the flavor of the day was bitterness! I explained to her that I hadn't always felt this way and I didn't have to continue to feel this way. Emotions are so fickle, and if I made life-altering decisions every time my feelings changed my life would be a disaster! Just as my once-affectionate feelings had soured and changed for the worse, they could also change for the better.
So after I came back from this trip he said, "I don't see us still together in 5 years if things continue on the same path," which alarmed me. I asked him if he wanted out, to which he emphatically said no, and I agreed with him. His mom has been divorced 5 times, and when we had our big talk about the crappy state of our marriage and what we were going to do about it he said, "Marriage might be hard, but I promise you from my experience watching my mom and going through it as a kid, divorce is 10 times harder." Once we established we wanted to make it work (which really wasn't a question for either or us), what were we going to do about it to make things better? We took the kids to the park and let them play for 3 hours while we talked. We discussed counseling (which I think is a great idea -- it worked wonders for my sister's marriage) but we decided to spend the money we would on counseling on dating regularly instead, and if that didn't work we would try counseling.
After our heart-to-heart, where we each told each other some of our needs that were going unmet (not blaming or pointing out all of each other's flaws, but a more vulnerable approach of "This is what I need"), things immediately started getting better, mostly just from the instant shift in our attitude toward each other and the marriage. It was HARD WORK (in my experience, it is easier to keep a happy marriage happy than to fix an unhappy one), but I forced myself to do kind gestures even if it didn't feel natural at the time, like get him a drink of water while I'm up getting my own or picking up his favorite treat while I was out and about. He responded in kind, and that, combined with mentally adjusting the course we were on, and having more fun together dating helped eventually make a big difference in our marital happiness. I also tried to remember how it felt at the beginning of our relationship and why I fell in love with him to begin with, which is really hard to focus on when you currently don't like someone. We still get grumpy at each other and we still have some needs that don't get met like we'd like to, but so many times as we're walking holding hands or cuddling I've said to him, "It feels so much better to like you and get along than not to!" A loving heart feels so much better than a bitter heart, which makes me wonder why I'd ever choose to let bitterness grow. But it just happens slowly over time, and if you're not constantly working on a marriage, it begins to stagnate. Bettering our marriage has bettered my general happiness as well, which statistics show is typical. A good marriage can add so many wonderful benefits to your life beyond just the good feelings in the relationship, not to mention the positive benefits it has for children. I'm very sensitive to when things start sliding downwards again (which was the natural tendency when we first started working on things, since it was what we were used to at that time) since I never want to get to that terrible place again. If it starts to happen, I immediately tell my husband what I'm feeling and why and we both try to listen to each other and take action meeting each other's needs better, etc.
Good luck, I know you can do it! It is HARD, and sometimes it is easier and even feels better in a sick way to hang on to the resentment, but over the long haul you will be much happier if you make the marriage work. Some people see two only options: Either get divorced or stay in an unhappy marriage, which I think is sad. So much is up to us, and there is the third and better option of making an unhappy marriage into a wonderful one. My parents have been married 36 years and growing up I watched them experience their fair share of ups and downs, and I also witnessed them work through it and stay committed, and they are SO happy now. My dad told my mom the other day, "All you have to do to make me happy is breathe. I don't care if you ever cook or clean again, all I need to be happy is for you to be alive and next to me."
P.S. I'm also going to send you a message containing a speech my mom recently gave on marriage in her public speaking class. It is very encouraging and motivating and will help give you hope and see the long-term benefits of working it out.