Importance of 'Science GPA' on Application

[NCSUrn97]

I was hoping to get some advice from anyone who's gone through the CRNA school application process / is in that process now. I am on track to graduate with my BSN this May, and Im hoping to land an ICU position upon attaining my degree. I have a great nursing school GPA (3.89), and I don't foresee that dropping very much given that many of my remaining classes are less dense than earlier ones. I've always wanted to pursue the CRNA route, and as I approach graduation, I've begun to do a lot more research into programs and their prerequisites. I want to do everything in my power to boost my chances of getting into a CRNA program. The problem is this: prior to entering my 2-year BSN program I graduated from a larger University with a BS in human biology, and during that time I did not take school very seriously. I was unsure of what field I wanted to enter, and I lacked the motivation to really commit to my studies. I finished with a 3.35 overall, and a 2.998 science GPA. My 'dream' CRNA program requires that your science GPA be above a 3.0 on the 4.0 scale. They list a few general classes such as 'Chemistry, Biology, A&P, Microbiology' under this section on their site. My question is this: how heavily do CRNA programs weigh an applicants science GPA, and if you barely make the requirement, is it safe to assume you are not competitive? Since I have a number of years before I would enter this program, I was considering retaking a few of these courses at a local community college/online in order to bolster my science GPA. Additionally, do courses like 'pharmacology and pathophysiology' (both of which I only encountered in my BSN) not count towards a 'science GPA'?