I don't really like the double-arch as a door wall... Not sure if I'll keep it. Maybe with a different door style (like, two single doors with hinges on alternate sides) it would work better. I just did them because that was what the set originally offered. I had to make the single arch door myself.
I'll look into making at least 6" wall variants with a single door, too, and then I'll see if the Garden set will easily accommodate these doors.