@Broken-Form - if you want the douts - you want one for each 4 x stereo channels and 1 for every 4 x mono channels module
and remember there are 2 versions:
3hp Douts - 8 3.5mm outputs
original Douts - 8 3.5mm outs and 6 1/4" outs - can also be used for 6 way format conversion
"some of the best base-level info to remember can be found in Jim's sigfile" @Lugia
Utility modules are the dull polish that makes the shiny modules actually shine!!!
sound sources < sound modifiers < modulation sources < utilities