changing the order of events in a story can make it nonsensical—if there's cause and effect and one thing that should cause the next event now happens after it, that's going to confuse people.
154,594 rounded to the nearest thousand is 155,000
that honor goes to bruno sammartino, who held the then wwwf championship for seven years, eight months, and one day. he won the title from buddy rogers on may 17, 1963, and dropped it to ivan koloff on jan. 18, 1971. koloff held it for 20 days.
i think it's awfully early to think about leaving high school for college, considering it sounds like you've only been in high school for a few weeks. i would probably advise you to give it a little more time, but definitely talk to people in your real life about all this, maybe your school's guidance counselor. i personally had a pretty terrible time in high school, but i also made some really amazing friends and grew a lot as a person. the "high school experience" is really whatever you make it. plus, i know i wouldn't have been able to handle college at that age. but that's just me! best of luck with all this.