I did a full set for my trainer several years ago. You can get the heavy denier Cordura through Seattle Fabrics, the Rain Shed or Denver fabrics. Get samples from the companies, so you can verify that it’s correct, and make sure you order the heavy weight. The lighter won’t hang properly as it is too light, and looks unprofessional. Order enough for everything you want to make at once, so you can get one dye lot.
A regular sewing machine will work fine, even for the heavy denier Cordura, but you’ll go through needles like you wouldn’t believe. I even did the Director’s Chair seats and Tack Trunk covers (complete with foam interlining) on my old Elna machine.
A standard stall is 12x12, so I did several 12’ panels. I would also recommend that you do the valances as a separate piece. I had the grommets set - you can do it yourself, but it’s hard to get them to look professional.
Zippers for trunk covers and doorways can be purchased through the Rain Shed or Seattle Fabrics. Get a large quantity of zipper tape (again, the large, heavyweight - not the garment zippers), and more zipper pulls than you think you’ll ever need! Inevitably they break or get lost. It’s always good to have spares.
Suitablity patterns are great, and have great directions. But I just measured the stalls at a show, and made sure I had enough length on the panels. It’s easy to fold over a drape to hide extra length, but hard to add!
Coordinating trim is easy. Get the same weight denier Cordura, cut with a rotary cutter so you can get really straight lines, use light weight iron on facing to set it, and just top stitch with a wide open zig zag stitch.
They aren’t hard to do, but the trick is to make them look professional and not home-made, so be careful with the details. Go to a show and look some sets over. That will show you the little things that those custom companies do both as short-cuts, and as finishing items.
As for hems, I just did a 1/2" rolled hem, topstitched at both edges. You can even add some drapery weights in the corners to get them to hang, but if you use a heavy enough fabric, you won’t have to.
Have fun. It’s fun to customize, and very satisfying to see them on show!