For Pilgrim's Manor, you can stick the Plaza where the Steel Forge goes to complete the link bonus for the Manor piece to get that last CC. If you don't have the Plaza or Steel Forge, I think it's still worth putting out because the other buildings will have their linked bonuses to produce extra T1s. You'll still get the relics on the Manor piece and just miss out on the CC. It is very useful set for event quests between the "Produce X Goods" and "Collect X Relics" quests! The Sorcerer's Feast, I'm less fond of because it gives T3s that everyone already has excess of, though Blossom Mages are my favorite battle unit and might be helpful for early game players that don't have access to training her yet. It doesn't produce that many Blossom Mages though so you would only be able to use her in spot situations at best. That said, you could potentially get more pieces in future Sorcerer's events. I had a complete Pilgrim's Manor, but got a Tome in my Sorceries to create any Manor set building. I now have 2 Manor pieces, but not a complete second set.