I'm finding surprisingly good award availability for four people traveling in February between BOS and HNL at the 22.5K miles redemption rate each way. If that is, in fact, DL's lowest-tier redemption rate between BOS and HNL (it's hard to tell, as DL no longer publishes award charts), then those seats should be available for just 25K KE miles roundtrip.
Perhaps someone on the FT DL forum can confirm DL's lowest-tier redemption rate on that route.