There is so so much more to the art of in fighting, I wish others would comment here on their own experiences.

I think if you are serious you are going to have to try and become as ambidextrous as you can too.

You are going to have to know when you can hit with both and he can only reach with one! Thats the key to inside domination. knowing down pat your limits and his limits.

Also spar with someone and maybe tie elastic around both your waists or something and start slow and learn to feel what is about to happen in close.

To stand fixed and spar with a trusted partner nose to nose and play with balance and rolling around arms and seeking holes up their guard as they move to your reaction and action; until you get to feel their intentions and their balance through their arms.

You need to feel it more than think it the closer you are in the fray.