"Does anyone know if this net is even compatible with the duomid?"
Typically in my Duomid I keep the bug net to the rear, leaving the door area for gear and the off-angle pole.
This means the bug net has a vertical front wall, and sloping back and side walls.
Cruise through This Thread to see what I mean.
IMHO this is not the project to start with. But if you're up for an adventure, all the dimensions are there.