Call around and you probably have a local shop that can sell you the materials. I’d buy the frame, corners, springs, and pulls from a local shop and then the mesh from hd.
Mark Strange at beautiful view had a pretty good video on rescreening. For normal screens I’d usually do the short sides first. But for large screens I’d do the long sides first. If you do opposite sides it’ll help prevent bowing. I personally never started on one corner and went all the way around.