I’ve been to the Sods on three trips and felt that I really covered it pretty completely in two days on each trip. If you end up going in July you’ll have to remember sunscreen – most of the northern part of the Sods is in full sun.
You don’t say how big your group is, but another thought, on a trail less traveled, would be to do a chunk of the Mid State Trail in PA. It would be a point-to-point hike so you’d need to work out the logistics, but the MST passes through a number of state parks with camping so you could mix up staying on trail with staying in a group site at a state park.
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