Agree ...take them until you're satisfied. They would appear to be "passing" ...unless you've 600 math and 740 verbal ...the reverse would be much more so. What is your breakdown?
Don't worry about sending any, all scores to USNA. None will nix you. They can only help. If they are lower, they are not given consideration. If they are split, the new improved score is included, lower one simply ignored.
Have you tried the ACT? Many do notably better on that test.
But in the end, the "science" and precision implied in SAT/ACT test scores is more "art" in determining when you should cry uncle.