Hey guys, I have a band, and we are currently looking for a good PA setup to start doing some shows. I want one we'll be able to keep for a while, so it needs to be powerful enough to be able to run larger shows with ease. I have an opportunity to buy a used Peavey Mark IV 16 channel mixer with a couple Peavey SP1 speakers. Are the speakers powerful enough to run some larger shows? Does the mixer have enough power? (I'm assuming it's a powered mixer because there is no power amp included) Also, would I be able to run monitors straight from the mixer? Or would I need some sort of amp setup to do that? Thank you much for all of your help. I'm new at this band thing, but I've always wanted to do it and any help would be greatly appreciated. Thanks!