No one else but YOU will be using your system. So if you're happy, then that's all that matters..... I can tell you are passionate about your choices, and that's the beauty of eurorack. However, I would reccomend starting with only a handful of modules (perhaps the core ones) and thrououghly learning them will show you what your system needs. From my experience, I've had "ideal" systems in mind, but they never truly stayed 100% true to tuition and changed as I purchased more.
I will agree you've covered nearly all of the bases for a groove box (my inspiration aswell), but there could definelty be better choices for the limited HP you're working with.
Also, having a pams and a clock module is a little confusing in such a small system. Maybe replace one for some more HP.... And for my last two cents, dont limit yourself on the modulation (LFOs, ADSRs, Logic, Ring Modulation, Attenuators etc.) Part of the beauty of modular is modular. Maybe look at the ochd expander.