i think that you planned too many voices and effects, and thatbyou are seriously missing utilities.

you want to add vcas.
and adding other utilities will make your rack performative. i would add a quad lfo (doepfer ?), a clock divider, many vcas, a good filter (maybe two depending on the amount of voices that you keep in) and envelopes. maybe a math or rampage.

i wouod advise that you do not purchase all voices, to build slow and learn the process first.