The extra matches don't matter for LFC if they can avoid injuries. If they can't, it's a different discussion.
They're deep enough at everywhere but defense to handle those matches. I expect you also see a stronger side against Spurs than Leicester, and a much stronger side against West Ham than LASK. I would actually expect to see a bunch of kids play in both. You'd likely see a lineup of Kelleher, Tsimiskas, Quansah, Maybe even Endo playing centerback, and then Gomez on the right, midfield of Bajectic for minutes, Elliott and Thiago and then up front with Doak, Gakpo and whomever needs minutes. Shit, you might even see Bobby Clark or another kid get a spot.