My question is how can you do 75 push-ups and run a 6:40 mile and now can only do 1 pull-up? Back in the day with the old 5-event test (which was much harder). in ROTC/AFA, guys had to do at least 4 pull-ups to pass. Perhaps you're 6'5" and weigh 270lbs, but even then I would expect someone with the rest of those stats to do more pull-ups. Just struck me as odd.
Either way, guys on here are giving you some good advice. As for what type of aircraft you want, sure it's fun to have far reaching goals--but at this point you should focus on goals that are more attainable at this point in life. Right now if you want to be an officer and potentially a pilot, focus your goals on getting into a commissioning source and figuring out how to do well in school and be a good cadet. I'm getting to be one of the older guys now, but I can still vividly recall how people were at my AFROTC freshman orientation day, most of who were talking about wanting to fly fighters--well a 1/3 of those people didn't go to field training, only half of those even eligible got pilot slots, a handful of those guys quit/washed out of UPT, so in the end maybe 2 or 3 of that original class of 50-60 became fighter pilots. Just some perspective for you if your only goal is to fly fighters...odds are (especially now) you won't. I know you're young and have aspirations (which is good) but the first to thing to start trying to learn is what it means to be in the military and more importantly an officer. Good luck and make sure to learn how to be a good follower/teammate along the way.