T.C.
Are you prepared to leave your child for a year at a time more than once? Pretty much every job field is being deployed to the middle east. They don't guarantee that you won't have to go back. We have had friends who are in non-combat jobs have to go for 6 months, then turn around and within a year have to go back for a whole year. You must consider this. They don't care if you are a single mother. That does not hold any weight at all as far as deployments go. I assume that you are considering going in as an officer since you are getting a degree. My husband just retired as a LtCol after 20 years in the AF. The people I am talking about were officers. I think it is even worse for enlisted people. Oh, and you will also have shorter TDYs, which are trips away from home. Depending on the job, they could be 1 week or 6. In some of his jobs, my husband was gone 1/3 of the year on various short trips. Are you willing to do this to your son?
By the way, while you live with your parents now, unless they are willing to move with you wherever you are stationed, which could be anywhere in the world, you will have to find alternative childcare for your son.
Oh, and I see now that you are getting your associates. You can't be an officer without a Bachelor's degree.