If you think you can do better, then most definitely. We are pretty similar in terms of physical fitness and grades, and I was accepted, but it never hurts to do better.
AROTC-dad is right, however, different units may have different standards for their own cadets. My unit sets the lowest at 2.5 before you are put on probation and/or counseled, but in order to keep the scholarship it is still 2.0.
My NROTC unit only gives out 5th year benefits to engineering students because they know how rigorous the course load is along with losing a couple units to taking Naval Science classes each semester.
To the questions.. These are all my opinions to help you gain a better understanding before...
Everyone has answered you other questions, but I just want to add something about doing PLC.
If you choose to do PLC, you have a lot more freedom than those who do NROTC but you have to be motivated to train for OCS on your own.
I recently just met some midshipmen from Cal over Cortramid and it seems like their haircuts were pretty standard. Short on the sides, atleast a 1 or 1.5 and the top is pretty much don't have too much bulk.
As NavyHoops said, there really is no magic formula. Do your best on everything, and try to practice for your interview with the recruiter. On the NROTC website they have a page stating the type of grades they want the applicants to have, and if I remember correctly you are above those...
So the new tobacco law just went in effect and now the age is 21 to purchase tobacco related products, however, in the law it states than military is exempt. My question is if the only place we are allowed to purchase tobacco under the age of 21 is on base stores only or if we can go to any gas...