Reiterating what others have said that 70 WOH vs 60 WOH provides only additional rewards, not additional status level/perks. I wonder if you have a cobrand card with either Marriott or Hyatt? Could be an easy way to grab an extra 15 (Marriott, even at no annual fee) or 5 (Hyatt, $95 AF) elite nights if that helps your projections/calculations.