I saw this beautiful colt out in CA and would love to have him $900!! According to the person selling him, she lost all her help and needs to sell her horses. I don't know how much babies go for, but i'd be a little suspicious of the price. Unless prices in CA are less then NJ.
I would think going from CA to NJ would be just around the same 2 week time, as it was for your friend. I would worry about the horse coming to be sick and then getting all upset because instead of getting a healthy horse, i got a sick one.
I agree that babies should travel with a buddy, id assume that would make it less traumatic on them.
If a horse was closer, i might do it, but i think CA is too far for a baby