Doors are a pain in the butt! We could not find windows, or trim in the shape we wanted, in a natural silver aluminum finish. We spray painted them silver.
The doors are made from the drops gleaned from cutting the door openings. I packed 1/8th inch luan around the edges of the opening and traced that shape to the door blank. This will give plenty of clearance for the doors to shut on the weather stripping.
The weather stripping was installed with caulk and staples, making sure to overlap the corners to shed water. The door is hung on piano hinge over top of the weather strip.
This was the most nerve wracking part of the build so far. You do not want to miss cut the rough openings for the windows! They are all plunge cuts with a skill saw, which are notoriously difficult to get straight.