First of... if you own a Bentley, sell it! It will help pay for your nursing school and then some.
You mentioned being a single mom. The level of difficulty going through nursing school will depend greatly on how much support you will have while attending school and your current employer's support in adjusting your work schedule.
You are able to take your general education classes while working full-time... most area offered online. Once you enter nursing school, their schedule and clinicals will rule your life for about 2 years. You will need to be flexible, your employer, and family.
The CNA position is rather easy to obtain in a short period of time; but it also pays the least when compared to nursing jobs. If you decide to become an LPN, our responsibilities will increase and you will have a State exam (NCLEX-PN) to pass in order to get licensed and be able to work. The RN track is longer and with higher responsibilities; likewise, you will need to take a State Board exam (NCLEX-RN) in order to get licensed and be able to work.
As a CNA, will be able to find jobs in multiple healthcare facilities. However, be aware it will pay you the lowest of the three (CNA, LPN, or RN). As an LPN, you will be able to pass medications, but the role is limited and so are the institutions that hire LPNs (mostly nursing homes and correctional facilities). As an RN, you will be able to work pretty much anywhere; however, the problem will be obtaining the first job if you have no experience. I had to start at a nursing home for 8 months before I was able to move on. It was not easy and it took a lot of work, perseverance, and always giving my best in my first job in order to earn a good recommendation.
If you are willing and able to volunteer at your local hospital or nursing home, this should give you the opportunity to show your character, professionalism, commitment, and behavior towards their patient population. If you are punctual and a non-troublemaker, it will help you land your first job.
Hope this helps! Cheers!!!