CNS Questions

Hi guys! I have a few questions. I want to go on to masters level. I've been accepted to SLU's ACNP program (and I was going to get the FNP as a certificate) but my last 2 preceptors (FNP's) have warned me of problems within ACNP, billing etc. I do live in a small town and there are NO ACNP's in a 100 mile radius of where I live. So, my problem is this. I've been talking to advisors at the university I'm currently attending and they have recommended possibly doing the CNS/FNP dual enrollment. This satisfies that FNP requirement (my requirement in case I ever want to slow down (lol) and do family practice or urgent care or something outside of the hospital) [which is why I chose the ACNP in the first place] but I'm unsure about the CNS. About the only info I have about CNS is a diabetes specialist that I once met. I currently work in a Surgical ICU at a level I trauma center and I thought about specializing in Trauma. Can you guys give me some info to help me out in deciding whether CNS is right for me?

Thanks,
Dawn