Platinum Challenge? You'll be EXP by the end of this!
As far as $$/q-mile, you're paying 6.75 cents/mile. That's generally higher than the mileage run ideal.
As for as $$/mile, 1.64 cents per mile is below the standard 2 cents/mile so it's an okay mileage run.
Good luck to your back and behind.... This is one heck of a long series of runs.