the obvious candidates are the 2 filters - also the adsr - get a smaller one, if you need adsr!!
I'm not sure I would add links - kinks is probably a better use of 4hp
edit
I just saw you update with a cold mac and a precision adder - these just seem to be randomly added

cold mac looks great - but once you realise it will only do audio or cv at once it becomes less attractive, at least to me

"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