The chapter 1 starter horse can do anything that Snake Detector does, and in a race across the map there’s only seconds between them. I took inspiration from The Ultimate Horse, and the author's unwillingness to add. Your horse will have maximum health, stamina, speed, acceleration and handling, and a bonding level of 3 or 4. This mod gives the horse breed of your choice the speed, agility, sturdiness and loyalty you crave. Lenny's Mod Loader is absolutely essential. Calming helps a lot, but personally I fire the drivers, lasso the target of the wagon and then proceed to kill everyone on foot.
Also I honestly think no horse is really great to stay under fire for a long time. Turkoman have good stamina and are good without Nacogdoches too.