Need your help, Thanks!

Starting January, 2010, I will send my son and daughter to preschool, they are almost four years old. For some reasons, I can only let them go to preschool for three days(Mon, Wed. and Thurs.) per week, both My husband and I will work from home and take care of them on Tuesday and Friday.

My daughter and son usually can get along well, but sometime they fight each other as well. I don\'t have much experience about four years old kid. I am worry about my husband and I couldn\'t take care of them when we are working from home. My husband\'s job is not busy at all, my job is not busy at most of time, but I need have some meetings in these two days.

Could you tell me whether we can handle this, thanks for your suggestion!