lots of people appear to get elektron gear working very well with modular - I would spend some time searching forums - particularly muffwiggler and reddit - it can't be that difficult to get it working - you are probably only a button press or 2 away - music tech companies are not the best at help unless it's only their products, which is kind of understandable!
if you still can't get it working then you should consider dumping the midi->cv module and getting a varigate and pams etc - at least that way you have some more space for utilities
utilities should not be an afterthought - they are an essential part of the plumbing of your modular (along with patch cables) - kinks and a matrix mixer (AISynthesis do one in 10hp) would be great additions NB this is not for mixing audio - it is for extending your modulation sources massively - these 2 combined can give you an extra 10 interesting and related modulation sources
I would re-read the Pams manual/advertising blurb - it can kind of do what you think it can but probably not in the way you think it does - for example the quantizer will only work on internally generated cv, not externally (afaiak) and it's not really a programmable sequencer - it is a great module and very good at what it does though!
"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