thoughts:
I didn't think I'd ever want more than 144hp - until I did... took about 6 months to get to that point and now I have about 1200hp - but saying that I may have stopped at 208hp if I'd bought a bigger case to start with (mantises were not available at the time)
odd-pairings are probably a good idea and overlap is no bad thing
if you want to stay at this point - stop coming to modulargrid, don't go to any other modular forums, don't go to any shops either online of in real life - don't communicate with other modular synthesists - these are all sources of gas
I'd want a lot more utilities - they make everything else go both further and different - probably another 100hp or so of them for that many voices - balanced rack = 30% utilties, 20% modulation sources - other 50% = sequencers, filters and vcos
"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