I too had very little credits (6 hours) and I was picked up, so I know they look at much more than just your college credits. The main thing is your potential of graduating, like if you have more than one job in the navy which shows you can multi-task, stuff like that. I really dont think there is a set form of what they want becuase in my class, we had everthing from SA with less than 1 year in and then we had 13 year chiefs, so who know. Just put your package in and keep trying, dont worry about what the next guy has.