To the OP, quick upgrades and long reserve times go hand in hand like herpes and a girl named Alexus. You can't have the cake and eat it too.

And for the love of god, do not upgrade just because it's the cool thing to do. its amazing how many I fly with that are counting down the hours but can't properly talk on the radio yet. It's no joke, get some experience first instead of on the job training on the left seat with unsuspecting passengers.