I guess you need to eyeball the competition carefully. If you feel that your act is as good or better than other top pros in your area, you stand a chance..... If not, perhaps a little more practice.....?

The next thing to take a look at is your repertoire. Are you already playing well the type of music that other top solos in your area are playing? If your taste in music is different from most others in the area, you may haver a hard time. Try pushing a jazz playlist in a country and western town.....

Remember, as a pro, your job is to play the music they want to hear, not what you want to play (unless they coincide!).
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An arranger is just a tool. What matters is what you build with it..!