360 Plug help

Working on the new to me Dart with a 360, what I have for receipts amounts to a 4876907 short block.
Edelbrock RPM air gap manifold, Performer RPM aluminum heads, TTI headers, and a demon 750 vacuum secondary carb.

Looking at the plugs they appear to be either too cold of a plug or running to rich.

The carb is apart working on rebuilding, and has # 70 main jets and #78 on the secondaries.

What are your thought on the looks of these plugs???

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