Well heres the thing, you're overestimating what any of those things really mean.
Forget the size of lebron james, if you had the strength of a worlds strongest man competitor, you'd already be 6'5+ and 300lbs+, so you'd be bigger.
As for the fighting skills mattering? No, there are plenty of people who know styles just like Jeet Kun Do, that even with the added strength of a WSM competitor, it wouldn't matter. You'd be able to take on maybe 4-5 average guys, but 1 gun or knife and the whole situation changes. Which if you were fighting real "bad guys" would often be present.
Durability if a heavyweight UFC fighter? Lol, do you even watch the UFC. They get knocked out all the time as well. It doesn't matter who you are, if you get hit in the face without expecting it there is a good chance you go down.
Brain of Stephen hawking? How would knowledge revolving around astro physics help you fight crime? General Patton, he went to west point and was an officer in the army for 30+ years; you don't have to be a genius to understand tactics. He isn't even known for his tactics really, they're actually looked down upon (See D-DAY), he is most famous for making every troop follow him into any situation through fear. This brain wouldn't really help you fight crime. You'd become a mix between Sheldon Cooper and an above average West Point graduate.
Another note on being a worlds strongest man competitor in real life. They don't lift as much as you think. The top competitor right now, Zydrunus Savickas, benches 700 pounds and deadlifts just over 1000 (both for only 1 rep, with chalk, straps, and full gear.) Very impressive. But a joke in comparison to even the non super power heroes in comics. Batman is said to rep 1000 pounds on bench and deadlift 2000 pounds or something like that. So you wouldn't even be half as strong as batman and in the comments you seem to think you'd be like Captain America. Not even close, cap is like 10 world strongest man guys put together in the comics.
You also missed out on the probably the most important part which would be expert SERE and Firearms training. You should have said you have the experience of a 20+ year delta operator or something. At least you could make the argument you'd just become a mass shooter and be like the Punisher.
As of now you're just a fast worlds strongest man want to be who would get shot outside of a bar by week 1.
You would lose to a bear or gorilla easily too.