I've lived in Munich for eleven years. Both my children (now aged 5 & 3) we're born here. It's a brilliant place to live, and wonderful for children. To try and answer some of your questions:
Children start school at the age of six here. You above three options - German state schools, Private Bilingual Schools, International Schools.
German State Schools are the best option if you want your children to really integrate and learn the language, but it can be tough on a child if they have no German at all. Not you are thinking of this option, I would suggest getting German classes for your children as soon as possible. When they start school, they onyx do half days, and there is the option for post-school child care (called Hort).
Bilingual schools are a combination of German families that want their children to learn English, and international families. They use the immersion technique, where all classes are run jointly by a native German speaker and a Native English speaker. The quality varies - soon are good, some not so. They are difficult to get into, with long waiting lists.
There are two international schools (Bavarian International School and Munich International School). All classes are in English, so they are good for families who are here in the short-term, but it's difficult for children to learn German and integrate with locale children. They are good schools, but by expensive so it's best if your husband's employer pays!
From ages 1-3 children can go to Kinderkrippe (crèche), but they don't have to. Private Krippes are very expensive an difficulty to get into. People tend to register their babies before birth. But if you are slightly outside the city, it will be easier for you.
From ages 3-6 children can got to Kindergarten, and most children do go, even though they can legally stay at home until the age of six. There are bilingual kindergartens, state kindergartens and private German kindergartens. Costs vary, so your best off just Googling as most able their own websites.
There are not really bad places to live in Munich. It's a safe, civilised city with good transport links. But of course there are more desirable areas. Rents are universally expensive but again range, depending on locations.
What do I dislike? Hmmm...being away from family, bad customer service, not understanding everything (I speak German, but there are still days I feel completely out of my depth).
What do I like? So much - being close to Italy for summer weekend breaks, skiing every weekend in the winter, all the seasonal stuff - Christmas Markets, Oktoberfest, Fasching etc. watching my children grow up bilingual. Oh, and the amazing group of fried s I have made over the years here.
Sorry for the very long post. There aren't really short answers to your questions! Let me know if you want any more information.