deciding route to BSN

I am starting my third year as a kinesiology major but want to become a Nurse and get my BSN and then once I get my ICU experience apply for CRNA school, so I need to have a good GPA. My current GPA is a 2.46 due to my partying in my first two years. I am now coming back to school 3 years later with a family and much more maturity. so should I finsih my Kinesiology degree and then do an accelerated BSN program (so that way i can have a clean slate with my GPA for my BSN) or should I try to get into a BSN program now? If I were to get into a BSN program now even if I were to get all A's my GPA would be about a 3.3 (which is not very competitive for CRNA) but if I finished my degree and went to an accelerated BSN program I could basically start all over and have a better chance of raising my GPA. Please give me your thoughts