Brenna-Route T6 on Sunday 20th Aug

Hij! I want to make this hike Brenna-Route (Nordkante) Schiberg 2044 m on Sunday 20th Aug. https://www.sac-cas.ch/en/huts-and-tours/sac-route-portal/schiberg-1700/mountain-hiking/brenna-route-nordkante-4134/ . We will probably need a 30 m rope there.