The biggest thing is that when you get there you are able to pass all the tests. I am in kind of the same boat as far as running abilities. I am happy with my PFA score I have now, which is a 11:30 mile and a half, 70 push ups, 85 sit ups. I am over 30 though, so I get a little more time. The Navy's goal at any of these schools is not to wash you out. They have spent the money to get you there and need replacement bodies out in the fleet. They are there to get you through any way they can using whatever means necessary. They may have to run you into the dirt, but they will get you through. The only thing which would hold you back is not having a 100% dedication to being a Naval Officer. When I went through enlisted boot camp, I made the mistake of being too gung ho and touching my chest to the ground on every push up and got about 3 short of what I needed to pass. With the Company Commander standing over me, I kept pushing in the half up position for the last 45 seconds and never even finished one more push up. Twelve years later I am still in the Navy. I am an instructor now and as long as my students give 110% I will give them all the extra help they need to get them through the course. By the way, I was a defensive lineman/guard in HS and still am 5'8" and 200 pounds. Just do your best and good luck, Rob