drop voltage block - I'd also drop the mimetic digitalis and probably the pittsburgh mixer (this i would want to replace eventually (but a cascading vca will do to start)
go back to full size marbles
add an fx aid xl
consider replacing the quad vca with veils - saves 2hp
leave the remaining space empty
i think you should go slowly - and stop overthinking planning - it will probably change anyway as you start to patch
get one of the sequencers, plaits or LIP, maths, one of the vcas, one of the filters and maybe the disting and kinks
work your way through the maths illustrated manual a few times and try out a few functions of the disting - if there is one particular function you like consider buying a module to replace it
"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