Since creating this, I have decided later down the track to cut a bigger hole to fit much larger gear and sew an extra large Fly to cover the hole on the Tent fly. The size over the cover will be based on getting any rain from flowing down away from the hole.
The inside tent material is not important so I will cut the hole and re-enforce the existing material.
This is just an idea as an after-thought. That is what happens with prototyping.