If you simply want sync, you can get the MIDI expander for Pam's New Workout.
-- Ronin1973
The Digitakt and Digitone can output DIN Sync, so you just need the $10 cable from ALM to get clock/run into PNW. If you want to sequence your modular from the Elektron boxes, you'll need MIDI to CV (the 0-coast has some capability, though it is a nuisance to use). If you want to go the other way (say, to get Euclidean rhythms driving the Digitakt), you'll want something with CV->MIDI capabilities, for which there are fewer options (but some exist).
I'm pretty new to this, but I don't think you should base your rack on a video made by someone for whom this is just a fraction of their collection. Also consider availability of modules. I don't know where to get the Veils 2020 at this point in time. Since your 0-coast is already on the way, I say give that a month while you learn how to use it by itself and with what you have. I bet that changes your mind on some things.