Most of the people here have no concept of these events. Did any of you compete in college? Did you talk and watch and get to know the teammates that did events other than your own? His ability to pole vault that high means he has a lot of strength. I would bet he could hj 6'6" 6'8" right now. I was a 48/1:51 400/800 guy in college and I could jump 6 in the hj. This guy is world's better than me in explosive talent. He has lj and 10.5 100 ability. He'll be fine for a 49 (maybe 50 end of day 1 fatigue) 400. 110h is the biggest variable. Shot put, discuss, javelin would take some quick training but he would be fine. Also if he's training for decath he will be strength training for that more too. 1500 I don't see him going under 4:40. Pv guys do not train distance and it's an entirely different animal. I would be impressed he breaks 5. Give him a few months and I'm sure 4:40 is possible.
My guess is tomorrow he does 7300. In 1 month he does 7800. In 6 months 8300. Give him a year and he's going for an oly medal