There should be no reason why you can't follow your career dreams while still being married, (unless they involve doing things not acceptable while being a married woman.) The communication should be with him. What have you got to loose? Perhaps he can be a help rather than a hindrance. If he is a hindrance, then you have to make a decision. It is your life. Live it the way you choose. But that is just my personal opinion. I've been divorced twice because of my attitude. And you do have a bigger thing to consider... the children.

I like to be single.
I have no problems following my career dreams, he supports me there 100%.
Communicating with him is difficult. Most married couples with sit down and talk, spend time together.If we spend quality time together once a month its plenty. He spends most of his free time with his friends. This where communication is difficult.
Honestly speaking sometimes I wish I had never taken a husband. If I had the ability to see this far ahead in my life I would have surely taken a different path
Due to your experiences you see things differently and clearly and I do appreciate your unbiased wisdom.