Can I tell you about my plans to leave my husband and him having no idea what I'm planning?
That sounds like a story, why are you leaving him?
Because I'm a logical person who uses reason to think about things.
I know that relationships can be difficult to manage, but if you want to breakup, you should talk to your partner. Planning to leave them without even talking through the issues with them is rude to them and will make them feel extremely hurt and confused about what happened.
He's not a logical person. He couldn't have handled it if I told him
If he's not being logical about it, you should consider bringing someone else into the conversation with you, a mediator, friend or professional. Explain to him that you're leaving and why and if he gets upset, you won't have to worry about either of your safety.