well good luck with that I don't have particularly large hands and I definitely prefer bigger modules with larger knobs and more space between the knobs and jacks - but each to their own
go slowly buy a few modules at a time - that way you can answer these questions yourself - it's your synth - if you can get similar functionality to links from other modules (and you prefer those other modules) then do so - personally I always find it useful to have a buffered mult etc etc
yeah the bored brains things will work, but you'll probably want a few, easily loose them, drop them on the floor and step on them, spill coffee on them etc...
"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