look for improving grades, so if you had a 2.7 gpa before, you should be earning above a 3.3 now to show you became a better student. Many ABSN programs list a 3.0 cum. gpa to apply, but thats just to be competitive. If you question an adviser on the average accepted students grade, your more than likely going to hear a 3,5-3.7 average, low generally around 3.3 or so. Those schools are very competitive. As for the CRNA, most of those programs are even more competitive, and nursing school
I myself had a 2.8 cumulative gpa after my first 2 BS, I did an ADN route and am taking BSN classes at the same time, so ill have an ADN and a BSN. Sadly after pulling my grades up to a 3.1 i was still seen as non competitive in many programs, with thousands of hours as an EMT.
There are also BSN programs for second degree students. takes 2 years to complete, not nearly as competitive as an ABSN, but there more expensive. Just another option.