You need to get some solid answers from a true accountant who does this all year long.... DO NOT rely on the "accountant in a box" or someone who is open a few months of the year or rely on general responses here.
A GOOD tax accountant (CPA) will be able to help you and back you up in case of errors with the IRS. You do not want the IRS on your back. The fly by night accountants who set up for tax season will be GONE if you happen to need them later.
You get what you pay for. A good CPA will be worth the $$ and create less worry for you.
MOST Moms here are not professional accountants, lawyers, doctors, etc.... we can give ideas such as irs.gov and resources but you need to rely on the word of professionals.
EDIT: No offense to the moms on here, like me, who are working professionals as well. My comment is meant that it is not wise to rely on a public forum for important information such as dealing with the IRS, medical and legal.
Best wishes