We're playing a school festival on an outdoor stage next weekend. FOH will be supplied for vocals, keys, and the guitarist will be mic'ed. I'll be using a preamp > stereo power amp > to 410 + 210. Since I have no PA support, and it's outdoors, I will probably have to turn up louder. Should I set up the cabs behind me, like I normally do, or put the stack toward the front of the stage (on the side, of course), and turn the 210 around toward the band to use as a monitor? I'm worried if the stack is behind me, I won't be able to hear everyone else. What would you guys do?