I'd be game to read it if you are still looking for readers.
The comments here mirror my sentiments - the title and blurb sound gimmicky.
I think the personal story angle goes much farther. There are no shortage of financial "gurus" happy to sell you a book. What does yours offer that those don't? I think the family and small kids angle is your defining difference and from just a few comments here it is a welcome (and not often covered) viewpoint.
For me, any book or blog on FI is driven by the heart - the "why" of your FI, if you will. Did you want to be FI to spend time with/travel with/raise your kids? Family is one of the most compelling reasons (in my opinion) and would serve well as a focus for your book.
I don't know your 6 points, but fleshing them out in ways that apply to all with specifics as to how they apply to those with kids holds value that may or may not exist in another book. Even if you drop the "everyone" angle and focus on families I think you have a solid offering.
I agree with the comment about a picture of your family on the cover (and others sprinkled through the book). Photos and anecdotes create an emotional connection with your reader and give a face to your story. Imagine the MMM blog with only stock photos (or none at all). Would it hold the same interest? Show me your success in pictures (travel pics, maybe?) and your advice begins to hold more weight. Anyone can write about anything, but not everyone can prove it. The pictures foster trust. Why do I trust your advice enough to pay for a book you wrote on it? Because I want what you have - time/travel/etc with my kids.
In that vein - give a little (personal story/pictures) to get a little ($) - Make your reader feel like a friend and you will get farther. Give your reader a reason to trust your advice and your "program." Be the guy/gal next door that I can picture myself sitting next to at the park while our kids play and I will feel like your advice is more accessible.
In this day and age gimmicky titles feel like marketing or like someone looking for a quick buck. While I know full well that bloggers and authors are profiting from me I don't like to feel pandered to and am more likely to pass on titles/blogs that smack of it. Are your steps truly secret or unknown or are they steps I may already have an idea about but your personal story and experience could encourage or inspire me to successfully complete?
You also have a lot of alliterative option with all those F's - Financial Freedom Family Five - use that to your advantage. Could you narrow the steps to five to flow with that? I know, that's a lot to ask with a book you have already written. :)
Random Title Ideas:
Five Kids and Financial Freedom: Finding Success in Five Steps
Five Kids and Financial Freedom: Finding Success in Six Steps
Five Kids, Five Steps: Financial Freedom for Large Families
Five Kids, Six Steps: Financial Freedom for Large Families
Financial Freedom with Five Kids: How Our Family Did It and You Can Too
Five Kids and a Dream: Financial Freedom For Families
FI with Five: Family Focused Financial Freedom
Five Kids, One Income: Family Focused Early Retirement (this one is my favorite)
Five Kids, Two Incomes: Family Focused Early Retirement
So, maybe title writing is not my forte, ha. But I think you can do better than the current one.
Just my (slightly more than) 2 cents worth. :)
</edited for typos and flow, and to add some thoughts>