I'm not too familiar with what a Pro-Rec is. Could you enlighten me? My recruiter is pretty confident that I will get in because I scored a 9/9/9 65 on the ASTB and my GPA was a 2.9 (ASTB definitely outways the GPA, I know).
You won't get a waiver unless you get that PRO-Rec first. When you apply to the board you will get a Pro-Rec (professionally recommended) if the Navy wants you otherwise you will get a non-select. Once you obtain this you complete more paperwork and other stuff to get a FS (final select). I don't know about others but being a prior service Navy guy with a very strong backing from some high ranking officers I was still unable to get an additional age waiver of just a couple months. Take it for what it is but the chances of you getting a age waiver presently without a Pro-Rec is almost non-existent. I’m not trying to ruin your hopes and dreams but I’m giving you a realistic outlook on the present situation. There are so many people applying to the Navy that doesn’t need an age waiver so why will they give you one? Because you have high test scores and a decent GPA? I am just saying I believe you should keep your options open.
On the plus side you and your OR are correct you do have good test scores. But remember that isn't the only thing the board looks at when they select people. So make sure the rest of your application is as good as though scores and you shouldn't have a problem getting a Pro-Rec but crazier things have happened in the past! Good Luck with everything.