Hi,
Please paste a link to your rack. It is easier to see the function of each module and to be able to comment on it.
ModularGrid Rack

As you will read in most posts, a bigger box. Maybe a 6U or 7U, if you like 1U modules.
It all depends on what kind of sound you are looking for.
At first glance, from what I see, all your pitch sources are random, coming from Chance, think maybe include a small pitch sequencer, to have more melodic control.
For example https://www.modulargrid.net/e/noise-engineering-mimetic-digitalis-black takes up little space.
It would not be a bad idea to also add an LFO with CV and resettable additional to Maths, they are affordable modules, they consume few HP.