As long as you have a decent GPA with the nursing degree I don't think that will set you back at all. From reading your posts I agree that the CG reserve would be a great path for you to take. As far as flying LE that is about 50% of the CG mission. We fly side by side with customs doing a variety of LE missions from counter drug/migrant, fisheries patrols & Homeland security missions. I know a number of pilots that retired/left the CG to fly for Customs. My advice would be to get started & finish your degree sooner than later so you have a buffer for your application. I'm not sure what the flight school cutoff is these days but if memory serves it's around 29 and the OCS cutoff is around 26. Of course there's some stipulations that can extend these cutoff ages based on time in service etc. The CG is a great organization whether you're enlisted in the reserves or flying the line on active duty.