I literally did this part of the Quest yesterday with the Solar version. It took me 30-45 minutes to get all 10.
Get a Ghost with a Relic Iron Sensor (if you don't have one, get one from the Speaker, Shaxx or Vanguard) and scour Patrol alternating between 3 sections of the map.
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Did solar in about 1.5 hours the other weekend That's with using nightstalker and helium ghost, following a decent path for gathering. Though perhaps not optimum