Steve, it sounds like you're having a mid-life crisis... I've been following your blog diligently for a year, I've read your book, and most of your archives. I started blogging about personal development because of you (my writing is awful though). In this post you talk about decisions you made with your wife, but it sounds like it's all you. It's you who wanted to date other women. It's you who wants to run away from your children. How can you be sure you're raising your consciousness? You could be regressing.
If you're going to break up, I suppose you should go all the way. Move six women into those six bedrooms and become one of those David DeAngelo types. Make sure you charge them rent to pay that mortgage + child support. Then in a year you'll want to be back with Erin and the kids.
I wish you good tidings and I hope you find what you're looking for.