My (potential) first rack (pls help)

This is what I've planned so far to be my first rack. But please help I barely know what I'm doing.

I'm primarly going for a synth that can alone make vast variety of sounds but I also want to have some fun with generative music. Is this enough for generative? Do I some specific modules?

I'm already thinking of switching the MATHS for Behringer 140 because of my budjet, so over 1000€ probably would be too much.

Also is the case too small? Should I get a bigger case or choose more compact modules?

(I'm also thinking of building on cre8audio NiftyCase so theres some of the utility of you wondering)

EDITED Today, 11:11

You can go with behringer abacus. the clone of maths.. much cheaper but the same

As NoSky already mentioned, if you're on strict budget then I'd swap Maths for Abacus which is significantly cheaper.

I'd also swap Koma VCA for Behringer Four Play (clone of Intellijel Quad VCA) and add some LFOs to provide modulation, attenuverter and some multiutility module with mixer and mult.

Behringer has Four LFO (clone of Xaoc Batumi) and Steps (clone of Mutable Instruments Stages). You can also load Qiemem's custom firmware to it which will allow you to control LFO polarity and frequency range though I don't recommend it if you're complete beginner. https://github.com/qiemem/eurorack/tree/v1.0.0/stages

There are clones of Mutable Instruments Links and Kinks which are great multi-utility modules. If you're in UK BeepBoopElectronics has lot of various utility modules. https://beepboopelectronics.co.uk/

https://beepboopelectronics.co.uk/product/passive-attenuator/

https://beepboopelectronics.co.uk/product/bonds-and-structures-links-clone-eurorack-buffered-mult-mixer/
https://beepboopelectronics.co.uk/product/2hppassivemult/

https://beepboopelectronics.co.uk/product/cuts-and-folds-kinks-clone-eurorack-utility-module/

I'm also not sure if you have some kind of mixer or audio interface but if not you'll need some output module to plug your headphones in. BeepBoopElectronics also has simple 2hp headphone output module.

https://beepboopelectronics.co.uk/product/2hp-headphones/