how much alimony and child support should i ask for with 5 kids after 17 years as a full-time mom?

I've been married 17 years, have been a stay home mother of 5 kids, all 5 w/ A.D.H.D, and the youngest is also mildly autistic. Lots of school problems to solve (alone), and driving to distant Dr's, therapists, etc. Our 4 year old is in an amazing autism preschool. I drive him (2 round trips) 85 miles a day, 4 days a week. The hubby makes 60,000/ yr. on paper, but does side jobs a few times a week. So maybe 150.00 extra per week. He's a controlling guy who most days left me with no money at all to buy food or clothes etc., for the kids. The fridge was almost always empty.My teens started mooching off their friends, so i went to work about 10 hours a week to buy food. I just need to know how I'm gonna make ends meet with my kids. I can't send them to daycare. I could, but it would cost more than i can earn. Their needs are a full time job that I've become good at over the years. I've stretched part time college out through the years and am a full time semester from an associates degree, at least. Any ideas on amounts of money i should expect monthly. I used the online calculator, but given the side work and special needs...and spousal support, it's confusing. Referrals to attorneys who are very good at this would be appreciated.Thanks!