The answer can be found in another question:
How well do you work independently and make critical decisions on your own?
It's not just "experience". I know a bunch of people that are really good in the unit but put them out on their own without someone to ask, check their dose, mix their gtts... they're LOST!
There is no code button. There is no rapid response team. There is no doctor to turn to when your patient "tanks".
You might get to make cell phone call but what's going on with that patent while you're on the phone? You're on your own.
I know the appeal to getting out there. It seems like it's really cool but at what cost? You absolutely MUST be solid in your ACLS algorithms. You MUST be able to adjust to micro-drip concentrations that aren't standard for your floor/hospital. (They vary) You have to be comfortable to recognize when it's appropriate to give a bolus or start "pressors" on your own. Know how to mix your solutions, give medicines, and take appropriate actions by yourself. Intubation? Running a code by yourself?
One more thing to consider. Motion sickness.
I have worked with people with far greater skills than my own. I can only aspire to equal their skills and knowledge but they can't be in an aircraft blowing around. They can't be in the back of an ambulance riding backwards writing/charting... They blow chunks.
All-in-all transport really is a fantastic job. My suggestion is not to be too eager. It might bite yo in the end. Work on skills. You CAN do it. Good luck.