Jose',

Be careful with the higher volume levels. Keep in mind that the audience will hear the same volume that you hear, and if you really crank it up, you'll be blowing them out of their seats.

As for the feedback, some minor adjustments on the mic's EQ settings should take care of that.

Good luck on your gig, and I'm confident you'll get lots of great responses from your audiences.

Gary
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PSR-S950, TC Helicon Harmony-M, Digitech VR, Samson Q7, Sennheiser E855, Custom Console, and lots of other silly stuff!

K+E=W (Knowledge Plus Experience = Wisdom.)