that's a good looking horse :)
I personally don't think his pasterns are all TOO long, and I think he should be fine, depending on his age, (how old is he??)
As for the blind part, I have worked with many blind horses, and to me, its all about trust. If you trust the horse, the horse will trust you, and he will know that you would never put him in any danger, so he can feel comfortable with no eyesight.
Anyway, that is a super nice horse! Just work on the trust factor, and watch out for his joints and protect his tendons, you should both be just fine. =]
He carried me away from all my fears, and his mane was there to wipe my tears. -RIP Vegas, my best friend.