So here are the updates I did so far
__Update 22.06.21 __
-Got rid of the the 2hp tune as it was deemed unnecessary
-Swapped the mixer for a Mutable Instruments Veils
-Got rid of the branches and Marbles and inserted a Twiigs (4 random gates + pam should still be a lot of randomization)
-Bought Pams new workout as syncing cellz and chipz with external gear is a pain in the ass as off now and beeing one of the highest rated and most popular modules this doesn't seem like a bad starter (tho it might be a bit overloaded for a beginner like me)
I do believe that for a full-fledged Eurorack-System this case will be too small yet this is just the start of my journey. I will probably pick up the modules one by one so even filling up this case will take its time. The gaps it has are filled by external gear for now (OP1+Electribe and some guitar pedals+external mixer). Once I get to the limit of the case I can still consider adding more or switching to a bigger case. So the new question erupting is: What to get first/next?