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Hey, doesn't look to bad to me. But I might not be the biggest pro around here. Just three remarks:
A. You can post the link to your rack here, not just the jpg. With that link other users can make copies of your rack with some additional tips. Just drop in the link without any other things, and it will show the graphic inline. Like this:
(got the link from your profile)
B. You'll probably have a hard time finding the old befaco output, the recent one can be found as befaco output v3 and is a great output module with an additional queue switch to pre-listen to another signal via the headphone out.
C The multiple is nice, but it could also be done with stacked cables or these floating multiples. Not as pretty when pached, but you win rack space. https://www.thonk.co.uk/shop/befaco-multiple/

Okay after looking into the rack there is more: Also you need some input module to make sure the signal from outside is on modular level, line signal will be to quiet and you could fry your outside gear just plugging it into the modular without any safety inbetween.

Next one is your performance mixer. You only added the 138p(Vintage) which will also need the 138o(Vintage or not) https://www.modulargrid.net/e/doepfer-a-138ov to output something. And the 138o will not replace the befaco output but would be additionally required. Plus point the 128o has an aux in so one signal can be added to your rack from the outside.