EMC Ground / Shield / Chassis / Return Paths

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lienPCB

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After watching some videos on grounds / return paths / shielding etc I came up with a design that I was wondering if someone could assist in assessing below simplified diagram with notes to see if it is a good grounding strategy also considering PCB EMI/EMC ?

Simplified diagram attached.
 
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What are your specs for conducted noise/ripple and radiated crosstalk inside the box and outside radiated noise for the CM choke? Without specs, how will you know if it works?
 
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