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Use pre-drilled screws instead of nails. Use 2x4 instead of 1x4 between the joists. Maybe even hangers for more strength and accuracy.
If ceiling is finished there are heavy-duty drywall anchors rated for 50# ea.
Don't have to patch and paint.
They will only be as strong as the drywall: Non-damp location, 1/2" min, screwed next to the load point.
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Meanwhile other things are still happening.
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