Scaffolding can address most of the church issues. Tobias (mining engineer) and the Locator can certainly achieve that
Stone floor? to me, it’s more than a floor; it’s a foundation. The stone foundation is a considerable resource/time drain that is completely implausible within 3 day screen alert
Amish and others can erect a building in quick order without power tools. Problem is their barns, etc are poor equivalents to the clunky (whole log) medieval structures. Seems like it takes a hectare of trees to build a single medieval building (hyperbole)… medieval builders could’ve saved forests, time, etc had they learned how to mill and use what are colloquially referred to in US as 2 by 4s