I am looking into divorce as a possibility in the near future.

I have an 8 year old and want to be able to see her at least 30% of the time—I would do more but am also working full time so it is doubtful that I would be able to. Probably 3 days a week are possible to spend with her and the rest with my wife.

I am making about 72K and my wife makes nothing. She hasn’t had a job when we have been married ever. What would I expect to pay for alimony and child support? Does the cost of living in the area we live have anything to do with this calculation? Is there a time when the alimony decreases or is it basically set for a number of years?

It will probably be an amicable divorce, but the money maybe in dispute, do you have any suggestions?
We have a joint bank account.