NCLEX Advice?

Someone please give me some advice or support or something. My support system has basically fallen through.

I graduated with an ADN in May 2011 in a class that had less than half a success rate of passing NCLEX. I tried taking my NCLEX later that year in September with hardly studying at all and was nearly passing in everything but failed needless to say (don't ask, it was a very low point in my life, a lot of abuse, major depression and self-destruction, etc, that I've since worked really hard to overcome).

Last October, I was granted the online Hurst Review via Vocational Rehabilitation. It's helped me tremendously and I'm so grateful! I have done NCLEX-like questions everyday since October, usually aiming for about 20-50/day (I use several apps on my phone, Lippincott, Kaplan, etc. This is the best I can do as a mom with a young toddler and no one to watch her). I've taken 3 Hurst q-bank tests and have received the scores 75, 77, and 78. Other comprehensive q-bank tests I try usually rate me about 60-65%. I really wanted to try NCLEX again in March, but I don't know if I'm ready or even how close I am to passing? I know I still need more time to memorize some labs and study my pharmacology more, which I will be doing the remainder of February with content review, but other than that, what are my chances of passing? I CANNOT AFFORD TO FAIL AGAIN. Advice, something, please!