Look, it doesn't matter what "he" says. There are laws to protect you against a jerk of a husband. He is not a judge or a court of law. If he is going to be a jerk, step up to the plate woman and let him know you are no dummy.
So first of all, remember you are strong. I like this quote by Eleanor Roosevelt:
"A woman is like a tea bag. You never know how strong she is until she gets into hot water."
-- Eleanor Roosevelt
You are not the first woman to raise a brood alone. Many strong women have gone before you. The key is to do it right. Protecting your financial interests is a good thing to do. It's good that you are asking for advice, step by step, along the way. Knowing the right questions to ask is good too, and your appear to be on the right track.
So first, get a good referral from a few ladies on divorce attorneys. I would interview three--at least, during a free consul, to see whom you click with. Take notes on each. Have a set list of questions, prepared for your interview. Get dollar figures and how they expect payment, etc. Will they wait for payment until you collect on the alimony, whatever.
To my understanding, alimony is a set figure. Your attorney should know 2 things: if it set, what is that figure and two, if you are entitled to it based on your length of marriage. My guess is that you are. Another mom said 10 years is the length; that is the length to collect on his social security but I don't think it is that high for alimony. Many women have young kids and dedicate their lives to raising those kids. If they couldn't have alimony as support to 'reestablish' their careers, that would be totally unfair. I found a link for you and it states that you may be entitled to "spousal maintenance" based on certain situations. Get a good lawyer though to help you win this!
http://www.azcde.com/spousal-maintenance.php
But, I do think that child support is based on his income. So you get the kids the majority of the time, you will get a sum to help cover their care. To my understanding, anything extra, like daycare expenses, educational expenses, etc., you may need to fight him on. If you do, that is sad but you will win if you have a case.
As far as him letting the house foreclose, leaving you homeless, well speak to your attorney about that. What a jerk he is! Mother of his kids...arghhh. While it's on my mind, get some counseling to help you understand why you selected such a jerk. I don't want to sound mean at all, but we all do make choices in our lives and you sure don't want to make that same mistake over. You deserve a man that honors you, even in challenging times.
So, find out how long till the house forecloses...i.e., how long you can live there. Some foreclosures, to my understanding can take a long time. Make sure those utilities stay on too. Prepare for alternative housing if necessary, but if he was the sole provider, it just doesn't seem logical to me that he, with the income, can leave you high and dry. Discuss with your lawyer.
You will make it on your own. There are a plethora of resources for women.
Here is another article you may want to read!
http://www.huffingtonpost.com/jeffrey-a-landers/the-top-6...
Educating yourself is your insurance policy that you will be protecting your interests and the interests of your children.
Here's another link to a seminar that is free. It's free. Maybe there is one in Tucson too.
http://divorce.eventbrite.com/ They have a FB link too.
Bottom line is there are men that try to weasel out of their responsibilities. I know a woman and her and her ex got divorced 10 years ago and she has had to fight him on everything. She wins but she has to fight.
This link might help you with some info. They are in Phoenix but maybe they could refer someone to you in your neck of the woods.
http://www.azcde.com/index.php