Agree with foreverlaur above. As a former nursing instructor, I had many students who had 'clear' career goals when they started, only to 'fall in love' with a practice area they had never considered. CRNA pay is good, but insurance premiums are high. Do you like to interact with people ? If so, CRNA may not be for you, because patient interaction is limited in this specialty. Also, you may not get the types of cases you like, as anesthesiologists often have preferences. In addition, many agencies require on-call time for emergencies. do you want to spend some of your nights in the hospital??
Still think it's for you? Then a BSN is in order, as well as time in an ICU as an RN. While you're doing your ICU time, try to arrance job-shadowing a CRNA in your facility before applying to school.
Good luck with whatever you choose !! One of the reasons nursing is a great career is that there ARE so many choices and career paths to take