Thanks for the tips Ashekyu!
In the end I think I am converging towards the following setup (west side approach):
The first upgrades I will want to do are getting a MATHS and perhaps going for that grids/peaks combo for percussions.
What do you think?
Do you think this configuration will yield interesting results?
I have self imposed a max 1k EUR budget to get started exploring the magic world of modular synthesis.
I have assembled the following setup:
What would you suggest adding as other modules?
Here I assembled some of the modules that I find most interesting: 
Is there any one in here that you would say "hell yes get that too"?
I plan to use 2x"TIPTOP Audio Z-EARS TABLETOP" and the "DOEPFER A-100 DIY KIT #1" as a rack. I believe this would allow me to have 2 84HP rows and when I decide to drop the $$ I may also get a case to mount the racks into.
UPDATE:
I have converged towards this design:
