What comes next?

Okay, here's the thing: I have no idea about my future. I'm and eighteen-year-old senior year student with no plans after I graduate. No plans, no money, no clue what to do when June comes. It's as scary as it is exciting. I'd like to have at least a five-year plan or something, but I also know my plans always manage to fail.

Right now I see three options, each one with their ups and downs.
A) Apply for a university. Pros: I'll get a diploma. Problem: I have no idea what I'd like to study, and I'm not confident about ever getting even accepted.
B) Work full-time. Pros: I'll get money and I'd be able start my orthodontic treatment earlier. Cons: I may not be able to get a job.
C) Travel. Pros: I get to adventure. Cons: It requires money even when traveling light and with a low budget.

I could work or apply for a university, but honestly all I need right now is an adventure. I'm still young and able to do things. I don't want to find myself in a boring job years later and realize I have not done anything except eat, sleep, work and repeat.
But then again, I feel like the longer I prolong it, the harder it will get to start doing the adult thing. Will I struggle with planning how to use my money? Will I have it harder when I finally start studying? Will I lose a part of myself when I start to working and have to settle down after scouring the world? Because I know I will these things will happen eventually.

The fact that I don't want to study doesn't mean I don't want to learn. There's plenty of things I want to learn. I want to learn how to make a website and a web store from a scratch. I want to know how to make mobile apps. I want to be an entrepreneur some day, so I want to learn how to run a business. I want to learn leadership skills. I want to learn how to do proper research and how to write, film and edit films. There's so many things I want to learn, but there's no degree that would cover all these things.
I want to work, too, but for my own mental health, A normal nine-to-five job is practically out of the question if I plan on staying there longer. I need to able to travel in that job and go out and about, working with people from different lines of business. I want my job description to be constantly broadening. Sure, I know I might not get lucky on the first try, or even the third, when looking for that dream job, but I need to know that whatever line of work I've chosen by then, there exist jobs like that.
What comes to traveling, I know I'm not cut out for the whole nomad lifestyle. I know myself, and I need one place that stays even when I don't. I need a place and people to come back to. I'm also a person with group project mentality - my motivation tends to be short tempered, so my long-term plans never end up well if there's no one else with me to keep me going.

My ideal life would have all the three sectors in balance with each other. I want to study and work at the same time, so I'm able to have a little adventure from time to time to keep me going. How I'll achieve this, I have yet to figure out. I guess I have a lifetime to find out.
Anyway, this still doesn't help to make a decision when I graduate. Any advice? Similar problems?