Just starting out, not sure what direction to take.

I have been interested in becoming a flight nurse and need a little direction. This has been a dream of mine for about ten years now. Unfortunately, due to family issues I am just now able to get started with the whole process, however I do feel fortunate that I'm even able to do this at all. Anyway, I start an ADN program next fall and I was planning on taking CNA classes in the spring just to get my foot in the door with a local hospital since they will pay for my tuition. However, I am wondering if I should take the EMT-B class instead in order to get some PH experience under my belt while I'm in Nursing school. I've also thought about doing both, cna part-time and EMT PRN. Any advice would be greatly appreciated. My ultimate goal is to have my RN/EMT-P. Another question, I have read on other posts on this site that once I have my RN I can challenge the Paramedic test. I would like to hear a few more opinions on this. I know that some of you don't think this is a good idea because the two fields are quite different. If I were to work as an EMT while in school for my RN would this be enough ph experience or would you suggest taking the complete paramedic training. Sorry for the long post. Again, any advice will be appreciated. Thanks.