I've bascially been using the same config. I'm in a cover band that plays a VERY wide range of music. I've got my rig setup to give me three different sounds. My clean sound is based on the blues channel with a low gain setting. For my Rock/classic rock sound I use the crunch setting with the gain around 1:00. I use the guitar volume to adjust the gain. I also use this channel for my blues stuff, I just switch to a single coil, and run a LPB-1 clean boost in my FX loop to make up for the volume lost when switching to the single coil. For my Hard rock/Metal sound, I run a MT-2 metal zone in front of the blues channel. However I have the gain turned ALL the way down on the MT-2. I adjust the EQ and volume to taste on the metal zone, and let it push the preamp on the blues channel into a really fat recto sounding territory. I know I'll probably get flamed for using a metal zone with a boogie amp, but the key is to turn the gain all way down on the metal zone, and let the preamp tubes do the rest.
I'm running everything at 50 watt mode, and don't ever go pass 10:30-11:00 on the masters. Anything more than that and the amp starts to loose focus on the bottom end. Taking off the casters and sitting her on the floor helps, as does sitting the amp back against the wall (not completely though). These settings are plenty loud enough for the drummer to hear, and we run a SM57 on it to send to front of house. Remember low stage volume is your friend. :wink: