Goat, get your ass to the to the pull up bar, and hit the treadmill. To become a Marine Officer, you can't be shooting for the minimums. For preship OCS, I would shoot for atleast a 275 just to keep up. Everything you do there involves running, so that is definately the most important. Remember, OCS is a place to prove your ability, stay ahead of the pack and you'll stand out and stay motivated.
-itoh