But. Using the 810 build as an example, a 45 would be a lot smaller. I suspect much less $$ since you're in Scandinavia and I keep reading there's not an abundance of LF darkroom up there.
A simple sliding track system for gross adjustments and something like a Speed Graphic focusing bed for fine.
Bellows are available online for not a lot of $$ and can be made to order for more $$$$.