I thought it was written honestly and beautifully. Once labug suggested the changes, I could understand why, and do agree.
I do feel that maybe you need some kind of segway in the middle. You said that things are not working for you, and then you go into needing to discuss the house, finances, etc. Perhaps it might not be clear what it is that you want. To me (and maybe to most here) it seems that you want to go separate ways, while still continuing to co-parent. But I'm not sure it would be clear to your H.
It's an incredibly hard thing to put in words, and even harder to take the next step and give it to the WAS. ((((BF))))