I'm all confused about the time, so my two cents probably comes too late (it's 10:20pm on Jan. 10th where I am). I would say, don't be afraid to just ask the audience. I have gotten to appreciate sound checks done on the spot, as I can sing a little then ask, how did it sound? The audience, at least those who are paying attention, seem to like this bit of technical inclusion and sharing of the power. It also relaxes me, which is probably as important as anything else. The kind of mike you're singing through is important, both the pick-up pattern and the brand, but less important than just simply relaxing and singing. I've had better luck with the B and P and S problem when I've sung straight on into a mike; it seems to work better if the mike is below me somewhat, and angled up. I feel free to adjust mikes if I need to, although I've also been known to knock the whole stand over. Good luck, and bravo!!! Encore! Encore!