Wecome to the working life mate! Let's see if I can't help answer some of these questions for you.
The first question I have for you is what kind of magic do you do? Are you close up? Stage? Mentalism? Balloon twisting says kids parties while fire eating says adult only. So I think you should probably start off by figuring out exactly who or what your image brand is, and begin branding it.
Next, having done three national tours, let me tell you right now get that out of your head. There's absolutely no money in it. You tour to build your resume, to knock a few locations off your bucket list, and to help perpetuate your brand. But with the cost of traveling, and the cost of living while on the road, you'd have to be playing the game on Copperfields level to make any rea money out of touring. That isn't to say you will be in the red, but it's just a rough way to go. You're bread and butter is cock tail parties and corporate events.
TV, and Cruise ships are possible but you'll need demo reels, head shots, and you'll need to know how to sell yourself because you're not the only one wanting to get a piece of that action. It all comes down to networking! Meet peope, know people, and connect with them.
As for working for T11 or E, my question to you is what do you have to offer? Do you have unique tricks? Inventions that are so awesome that they can't do business without you? Again it goes back to networking. Get some video of your work done, and then meet the people who make the decissions and find a way to get infront of them.
Also go to Jamie D Grant's website and buy his book "The Approach." It's exactly what you need right now.
OK, so I've been doing magic for about 6 years now, along with balloon twisting, and I'm picking up fire eating. I've done restaurant work and birthday parties. Now I want to get myself really out there. How do I become a touring magician? How do I get on cruise ships? How do I get on TV shows? How do I get a job at a big magic dealer like Theory11?