Looks good BJ. I usually soak the hides in a KOH solution to slip the hair and remove the epidermis. Some times the hair slips easy and the epidermis stays on. I try to leave it on for rawhide, but if I hit it in a few spots, I'll take it off the entire hide. Your frame looks good. The corner braces will make stretching the legs easier. To keep from having to wrap around the 2x's, you could drive nails in every 4 inches or so and just go around the nail head. This year, I fleshed the hides over a beam and stretched them in frames to dry. Once the weather warms, I'll buck, scrape and stretch them again. The bucking works better in warmer weather, I've done mine in the basement when its too cold outside. After bucking and dehairing, the hides need to be rinsed. Moving water is best, but a vinegar bath will work also.
Kyle