Vortex Sound Research

So I finally got a 0-Coast & the OP-Z Oplab module on the way to me.

I am already thinking about how to expand...in the link you can see an idea of what I have been putting together to complement the setup, what do you think of it? What would you change? What should I add first? I will have to buy slowly, as I got $500 to start with.

Consider me a complete noob.

Thank you for your help!

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https://www.modulargrid.net/e/racks/view/1047801