Marshall stacks?

Question:

Marshall stacks?

My band has a mixer, a PA, and an amp for each guitar and bass. I figured it might be easier for both recording and live performances if we sold all of our crap and bought 2 Marshall stacks and used the extra money to get a nicer mixer, that way we could mix all of our sound through the mixer and just plug the mixer into the stacks. My questions are: are there any reasons that this would be a bad idea? Can you get a stereo/PAN sound with just two Marshall stacks? And if this is all so, then what exact cabinet model(s) do I get?

Best Answer - Chosen by Asker: Well, sound would come out - it just wouldn't be good sound. The mixer and PA speakers are designed for full range, flat eq, accurate sound. Guitar amps are taylored for guitar only. Plug a mic into your guitar amp and listen - pretty bad, right?
A better idea would be to get a simple powered mixer - plug in speakers and mics and bam - you're done. Our band uses a Carvin 880 - 500 watts for mains - 300 for 4 monitors - real simple to use - great sound. Weighs 20 pounds.