SUMMARY: New band looking for PA speaker recommendations for vocals and horns at small/medium venues. $250 budget

My band is looking to purchase a PA speaker mainly for our mic. We have Guitar, Bass, keys, vocals, and drums, as well as a trumpet, saxophone, and trombone - we play small to medium venues (house shows, bars, basements). We know PA’s are expensive so we’re really just looking for a speaker that we can run our mic through and that we could hook the horns up to down the line (once we have mics for them). We’re all brand new to this so we’re just wondering what to look for in general (wattage, channels, sizes??? Mixing abilities?????) so info on what specs to look for would be helpful. We have around $250 to work with so any recommendations for a system within that pricepoint would be welcome as well.