Denmark for work and living with family?

Hello.
I have got work permit with three years of extendable contract in Aalborg as Nurse on 1800 EU per month excluding Tex. I have a baby just about a year old and one to come after next 4 month . My question is understandable to all world and especially to Dane peoples.
I am very much nervous about next destination to choose for work and for live. because financially I am not much sound and good. I am hard worker and I am smart enough to learn languages quick and I am skilled. but, my wife is very much house hold women and she is going to birth a baby in next 4 months.
1. please tell me what is my future under these circumstances?
2. Is Denmark is very much costly to live for four person?
3. Does my wife will get any job easily and will she and I get time to learn Danish?
4. What If my wife will birth baby in Denmark, does We will be a strong candidates for citizenship or only our baby?
5. What about us and our baby feeds, education and health coverage?

I am not rich with wealth. but, I am rich with honesty and prayers.
please answer me. your suggestions will help for my and my family future.
thanks & blessings
Sherry Iqbal