Great ideas -- you'd probably wind up creating time for yourself and having more funds.
Consider the following scenario. Suppose you work for three hours and use the money from two of those hours to buy four hours of household help.
Your household help can probably accomplish in four hours what it would take you twelve hours to accomplish in terms of cleaning and organizing.
So, you wind up netting eight hours of time for you and the kids and one hour of pay left in your pocket. Plus, a lot less stress, a nicer house, and so on.
Dunno about your child support question. Was his child support based on a state calculator? If so you could run the numbers and see if the amount changes.