If you have serious issues with flashing lights I would not recommend it. In the field you're going to end up at scenes that have multiple units presents (fire, police, EMS) all with flashing lights going, and it can last for extended periods of time.
If you're solely working a transport sort of job it's less likely, but if you're interested in trauma and the like then that's probably not what you're looking for.
Job availability varies depending on region. Doing a job search is the best way to see what kinds of things are available to you at different levels. Keep in mind your scope of practice at a given level can also vary (for example, out here in the sticks our Basics have a wider scope of practice than they do in the city ninety minutes away).
Training for Basics is six months in my area (YMMV depending on region and program). Advanced is about a year and change. Paramedic is a two year commitment.
Have you looked into scribing in the ER? It generally doesn't pay well, but it's good exposure to the environment.