I have a stewart PR 1000 being shipped to me. Its basic specs are: FTC Power Rating <0.1% THD 20Hz-20kHz both channels driven 200W x 2 @ 8 Ohms 350W x 2 @ 4 Ohms I plan to use one channel to drive one 4ohm schroeder mini 12+ which would give me 350w. I want to get an even smaller cab just for practice, say a ampeg pb1-12 or gk mbx1-12. The gk is 8 ohms.But I would like to be able to use it with the power amp when i need more wattage and speaker surface area. my concerns are: -the cabs are different ohms (4 and 8) -the gk is only 100w while the mini 12 is 500. I assume i could adjust the volume of each individual channel to compensate for the cabs wattage and/or spl specs - will it even make a difference to add the extra 1-12 if its rated for much lower watts or has a much lower spl rating ?(the ampeg is rated at 93db spl, but I think its 500w) Basically I just want to know if i can "mix and match" cabs which are completely different beasts using a stereo power amp with each cab assigned to its own channel. This is may be sort of a stupid question, but I just to make sure I dont fry anything or to see if its a viable idea at all.