The custody and placement decision in each case is different based on the facts of the case and how they apply to the statutory factors for placement decisions. Based only on the facts you provide, you should have a good chance of having the children for a greater period of placement. You should talk to an attorney to help you through the process. Many of us provide initial consulations for a discounted rate. Also, depending on your income, you might be able to get funding from Judicare here in western Wisconsin.
I agree with the other attorney. You seem to have a great deal going for you to obtain custody but you should definitely consult with an attorney in your jurisdiction. They would be able to tell you the specific requirements in your state.