Multiple floppies in one system?

I'm putting together an old 486 system, one of whose main purposes will be to read/write floppies of several formats. Like 5.25" 360K, 720K, 1.2M, RX50, etc., and 3.5" 720K and 1.44M. I also want to be able to copy RX50s disk to disk on the appropriate drive type. So I figure it'll take 4 drives (or maybe 3 drives where one is a 3.5"/5.25" combo). All of these would be in one enclosure. The question is, how to do this without having to unplug/plug drives every time you want to make a configuration change? It would be nice to just be able to throw a switch or two to re-configure. Not having to get into the enclosure would be nice, too. I've thought of two ways to do it, but I'm not sure they'll work, or if there might not be a better way. 1) Plug all the drives into one control cable and switch on/off the power to the drives to select them. 2) Plug all the drives into one control cable and select the drives by switching a control line on the control cable. Any comments or suggestions would be appreciated. Thanks, Dave -- David C. Jenner djenner(a)earthlink.net