Noah, sorry to hear about your diagnosis. I am going to offer a little of a contrary opinion, but not for the "usual" reasons.
For the record, I am the father of a somewhat recently diagnosed 14 year old - Dx Christmas 2015. Because of that I have gone kicking and screaming into the world of pharmacies, insurance, prescriptions, sensors, pumps, and physicians with both barrels of my parent tingly sense consistently telling me, that if I don't get this done right now, my way, my son is going to die or at least be harmed.
Does the 6 months wait seem correct, or in your best interest. No.
Is the ability to micromanage your dosing with a pump amazing - Hell Yes
Is the ability to sleep in, skip meals, and better deal with your exercise regimen all great with a pump - Yep
Most impressive to me, is your fighting attitude and desire to stay healthy which will be to your greatest benefit.
I would caution you to make sure this is the hill you want to empty your "enthusiasm" on. I speak having fought the system on a number of issues; i.e. old insurance covered Dexcom, new one didn't, new insurance won't cover our preferred brand of strips, etc. etc. I have filled out mountains of paperwork, multiple appeals with well thought out medical reasons including physician opinions, documented medical difficulties, etc, to be told that my appeal has been reviewed and they are sticking with their original opinion, for no good reason. In one they at least made me feel better by restating my argument before denying it, again...
I say all this, because you may find that even if you appeal, it will take 3-4 months to get your way, at which point you would have qualified anyway. Now if you were denied a CGM, I would fight till hell froze over, or at least until I made enough money that the appeal process was more expensive than just buying the technology myself...