Aim high. If you already have not invested time in a nursing career and are starting from scratch, I always recommend going to medical school and becomeing an anesthesilogist if this is the field you desire. You will have more atonomy.
Good choice. As an anesthesiologist I believe nurse anesthesia is a very rewarding easy going field. Though as in any field currently this field of crna is getting crowded and jobs are not as easy to get as it used to be recently. It means you may have to be flexible about where younpractice.