generally sounds like a good plan
I would suggest not going for the 2-3 tier moog 60hp case strategy though
they work out quite expensive by the time you've powered them
the best decent (in terms of power and build quality), reasonably priced cases are still imo the doepfer LC6 with the PSU3 and the TipTop Audio Mantis and probably will be next year and the year after etc
and neither of them use a power module - so you get all the space you buy for modules you want - not loosing 4hp or so per case
"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