We'd recommend the Crater, Fulcrum, or Ma Deuce for 8 or more days. Keep in mind, any of our packs can have accessories attached to increase organization or capacity if needed however running a larger pack is typically recommended. 

https://kifaru.net/store/packs/expedition-packs/fulcrum-bag-only/

https://kifaru.net/store/packs/expedition-packs/crater/

https://kifaru.net/store/packs/expedition-packs/ma-deuce-bag-only/