I have no experience with that style of hack, I use the longer shank braided nose. But from what I know about those, I would say I'd bring the nose strap up just a touch. The chin looks good, just make sure you can get at least two fingers in it when it's relaxed. I found with Hoover, once he got used to the hack, he barely needed the curb...it was basically just there to keep it on. I could get four fingers in it when I tacked him up...he was going off the nose pressure to halt.
"Sit tall in the saddle, hold your head up high. Keep your eyes fixed where the trail meets the sky. And live like you ain't afraid to die...don't be scared, jut enjoy the ride." - Chris LeDoux