BS of Psych and ADN okay to get into a CRNA program?

I have a slight dilemma: I completed a Bachelor's of Science degree in Psychology from a large State University, and immediately entered an accelerated Associate's program in Nursing for individuals with a prior bachelor's degree. I have now been working as an RN for three years; one of which was on the Surgical Floor, a few months of which were as a Clinic Nurse (NOT FOR ME!), and the last year and a half in the PACU at a large hospital with upwards of 50 surgeries per day (separate from L&D ORs.) I have been extremely interested in becoming a CRNA since a couple of weeks into working as a Recovery Room nurse; however, my grades were never very good, and my Bachelor's degree is in Psychology, not Nursing. What I want to know is: does it make more sense for me to complete an RN to BSN program, with the intention of bringing up my GPA, before applying to CRNA programs, or are there enough programs out there with lower requirements for admissions? Please understand, I have been extremely successful as a Recovery Room nurse, and very much believe that I would thrive as a CRNA, even though my GPA has never fully reflected this fact. Honestly, any of your thoughts would help! Thanks for your time.