I can answer a few of those questions:

Scale: It's.... big. Bigger than France and the lowlands combined. I think it was something like more than 200,000+ acres?

Size: It's up to you. The stats are given in the rules, so it's up to you. Do you want a small, very developed nation? Or a large, agricultural nation? They both have ups and downs depending on how you set up your nation as the stats explain.

The church is... not really a unified church. Our church is a splinter group kind of like how the Anglican Church left the Catholic Church. So, it's not an Almighty - global entity. That being said. They are one of the more powerful factions in Lundland. They will be stronger than any one player at the beginning of the RP since they have autonomy over their own lands, and they own a lot.