Family input

So I need some help from my family. I graduated with my medical assisting and when I went to take the certification practice test and I didn't know what I needed to. My main goal was to get my R.N. but you have to work as a C.N.A. to do that as you all know my back wont let me work as an C.N.A. so now I am thinking med tech. But I just can't go to more school without getting a job first. So here is what I am thinking...I will go take a phlebotomy course (6 weeks and 450$)and then work in phlebotomy while I go back to school to get the knowledge I need to get a good job. Here is were you all come in I want to know what you think about this and if I am doing the right thing or if I should just keep trying at the M.A. thing for a while.