For starters.....Be yourself, use your voice as is and don't try to sound bigger or boomier. Unless your voice is annoying....there's no need to worry about how much it sounds like a "Radio Voice".
Speak clearly and normally....with enthusiasm....as if you're talking to a friend on the street.
You won't get rich in a small market. If money is your thing, get into radio sales......that is where the money is at in smaller and medium markets.
Physically .....it is not very demanding, but mentally....it keeps you very busy, especially while you are on the air. Conditions are usually great. After all, you're cool in the summer, warm in the winter, and dry when it rains.
Keep in mind...it IS a job. Some long and odd hours can be associated with it. It can be a challenge at times just like any other job.
One other thing.....You will NEVER please all radio listeners. Everybody WILL NOT love you......regardless of how good you are.