Answers to both questions is NO. T-38's don't guarantee a fighter either. We have 5-7 T-38 grads in my AWACS squadron. Needs of the AF.
All you should care about is being a student pilot and learning to fly. It's good to have goals. But manage your expectations. No one flies solo, so being a good team player is the key to success. The instructors don't care how good of hands you have, if you taze your bros to better yourself, you'll be flying the furthest thing from a fighter if they don't wash you out for airmanship.
I want a 5th gen as well, but it's last on my priority list of what I want to get out of UPT. I'm just happy and thankful to have the opportunity to be there, period dot.
"Just Happy To Be Here".