looking good!
I'd just be a little concerned about the DC barrel jack you are using. Most of them are only good to handle 2A ~ 3A and since you are running on 12V I'd probably try to find a better quality one at some point.
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for my
DSX1 STX Project I used some of those gold plated / HiFi grade DC connectors and if paired with some thick cables I found they work well up to 100 ~ 120W @ 12V
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If you use some shrink tube instead of the plastic housing, you could also turn them into an "angled version" ...
alternatively, you could solder the DC input directly to the board, like NFC did this in one of his recent STX builds
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