Nothing right off the top of my head. But the main thing I spotted is about how big are you? A 17" western saddle is quite large. I ride in a 17" Stubben for my H/J stuff, and a 15" for western, with a 16" swallowing me. Just a thought, and have fun with western. It will be a change, but you'll learn alot.
I'm about 5/1 or 5/2 and I think I ride in a 16" in my Antares for hunter/jumper my mom thinks 17" would be fine. And if the saddle is to big for me I can return it within 3 days so i'll have my trainer look at it also to see if it fits me properly and my two horses.
And thanks, my trainer says she will teach me some dressage stuff and we won't have to go slow all the time so that's good. And i've pretty much only switched because my horse has navicular and can't jump anymore. So i'm hoping western will be fun. And it will be nice to learn new things and be back with a trainer especially after riding on my own for over a year