Vol 85 probably won’t have Prime #25 as that should be in Vol 85 with the Unicron miniseries and maybe Lost Light #25 too. Volumes 85 to 88 should complete both Optimus Prime, Lost Light and Unicron.

Vol 91 should complete G2. The other seven volumes though? I wonder if they’d include the Marvel TF Universe plus the profiles from backup strips, and if they’ll include the DW MTMTE profile books. Maybe they’ll stretch the definition of G1 to include the Beast Wars mini-series and profile books (those do have G1 characters in them and it’s the same universe).