I want to be the ultimate explorer/hiker/mountaineer etc?

I'm 20 years old in college and i love hiking. In fact, next spring I will hike the appalachian trail. Now im studing engineering, however, I'm also planning on pursuing a flying career for an airliner. After i become an engineer and make better money i can save for 5 years learn to fly become a flight instructor. build my hours.. Now i plan on saving atleast 50K in 5 years as an engineer. If im lucky i could save up to 100K. I will be living way below my means and probably going to take the bus etc.. anyway, then i want to hike the pacific crest and continetal divide... I'm also a good writer and am going to try to write a book and get it published... Then i want to hike some of the worlds greatest trails. I want to become a mountineer/rock climber/sky diver/surfer/mountain biker/survival expert. i want to be outdoors. after spending maybe 3 years doing all that with the money i have saved up I would like to fly for a regioanl airliner.. then after 10 years of that a major airliner.. where i will retire and have some decent money saved up and then I can just travel the world.