Advice on career change

Although my answer may be embedded in someone's post, I need advice on making a career change. I was accepted to a few 2nd degree BSN programs in the stat of PA and Maryland, I would like to practice someday as an anesthetist, and it is not for the monetary incentive, although that is a bonus, I do well enough currently as a pharm. rep. My questions are what my chances are of getting in, since it seems like everyone is trying to go this direction? My degree is in biology 3.3 cum. science gpa about 3.4. I recieved my degree in 97'. After I completed graduate level courses in sciences, ranging from pathology, biochemistry, including a year of gross anatomy, most grades were B's. I then attended a physician assistant program and completed the didactic portion most grades were B's a few A's and a few C's, it was at this point I learned about the nurse anesthesia practitioner. I became greatly interested in this field and to make a long story short, I got a job in pharmaceuticals and opted out of completing the PA program esp. since it would set me back another 35K on to the first year I aquired in the program. I then took on a job in pharmaceuticals, and in the mean time I am debating if it would be a good move to let go of my job as a rep and pursue this thing. So, again, what are my chances? I am
31 years old, and a little afraid of the long term outlook for anesthetists. Also,I stink at tests like the GRE, although I never took the exam before. Do I need to nail this exam?
Second question does the 2nd degree school I attend matter to an anesthesia program. I am from Pgh area and anticipate being accepted to Duquesne, and have already been accepted to Drexel in Philly for March, not sure if I will go there being I have not a clue where to live. Thanks in advance for any replies.