6 Flexible Days in a 14 Day window.

I was looking Into the 7 day Rail Pass VS the JR East-South Hokkaido Rail Pass with 6 Flexible Days in a 14 Day window.

I'm traveling from Tokyo to Akita to Sapporo and back down to Tokyo in a 7 day window.

I planned on taking a bus from Tokyo to Akita and then 5 days later using the 7 Day Rail pass for Akita-Sapporo-Tokyo.

Could I use the JR East-South pass instead for the entire trip?