I am constructing a wire transport cage for one chinchilla. 14 gauge 1/2” x 1” top quality rabbit wire. I have cut out all of the panels, but have not started using the J-clips. I cut a piece for a TOP opening door (has “lip”/overhang), but should I make a side-opening door instead? The cage is small, 8” tall x 7” wide x 11” long (has a wire bottom, but will fit inside a small baking sheet pan). Top opening is easier to construct because to the small sides n’ ends. More room to get hand in/critter out. Can still modify the way the cage opens. Help?