My team does soft-agile. Month long sprints and minimal meetings. We treat it less like a rigid structure everyone must conform to and more of a way to organize backlog and delegate. It has worked very well for us, however we are a small and fairly siloed team and our stakeholders are highly technical people who consume our services internally. we get the leeway to self govern properly.
We have tried 2-3-4 week iterations, but keep coming back to 2 weeks. It's enough time to do something, but not so much people can get lost off track for a long time. But, we're also ok incrementally delivering features. No single feature has to be done in 2 weeks. Some take many iterations.
Also agree with minimal meetings. 1-2 meetings/iteration. When new people start we'll add some office hours time every other day as needed until they get up to speed.
