Live a Live is so gorgeous! Even the SNES original is super pretty. I feel a little bad that the Wild West chapter is kind of a small one compared to some of the others, but it's still cool. The only other western RPGs I can think of are Boot Hill Heroes, UFO 50's Grimstone, and err, maybe Wild Arms? I don't know enough about wild arms to say so, but I know some of its music feels western-inspired, so I dunno. I'm excited to try the Live A Live remake sometime soon, it's uhh on the list XD
That horse sprite is an excellent selection too, I'm pretty sure if you had to animate a horse like that it could easily take a month all on its own! I've done like one quadruped walk cycle before and it takes forever even with plenty of reference, so definitely a better use of the time to do like the coding and implementation and stuff ^^