James,
The option of doing real estate to speed up your income is a great one that I used as well. With two littles about the same age I know where you are coming from.
What i would recommend may vary depending on further information. If you are comfortable with the risk and can make the expences work out with the real estate plan then have at it as it can pay off well.
In a scenario where you are a little more risk averse maybe you study from your friend and find a way to make some extra money doing this- finding deals, handyman, advertising or whatever you find to help get into the business while paying down debt and building up savings.
My avenue if risk averse and you can break down some of these other bills would be as follows:
What is monthly payment for sweet minivan and student loans?
If you have multiple student loans and some have higher interest rates clearly you want to pick these off.
Pay off your smaller loans of choice to reduce amount you need to make monthly and take that extra you are used to spending and apply it to paying off other loans. This can reduce the amount needed monthly and make a loan to get into real estate easier to qualify for and easier to swallow.
There are also other avenues i know too little about that you can research such as reits and crowd funding.
Best of luck to you and your family.