I would personally prefer what deafdyke mentioned over what you just said. Spoken and ASL, split halfway during a school day.
Look, I'm what you would consider an oral success. I speak very well and nobody has ever known I'm deaf without me telling them so. But I would trade what I had in a mainstream oral environment for the social ease and total understanding of what was happening among my peers in an ASL dominant (or even what deafdyke mentioned) environment. Instead of following a conversation easily, I had to fake my way through them for a very, very long time.
It is extremely difficult, and while speech is a bonus, it isn't what people should be concerned about. Education should be everyone's main concern, and the best way to receive it is according to each child. But, I believe that oral training tied to education is going to be a long, hard journey for a deaf child, no matter what accomodations they have. Even for a HOH child, it is difficult. I have captioning right now in college, and math is so hard to follow orally WITH captioning that I'm considering transferring to Gallaudet. Being raised in an oral environment, I thought it was normal, until I stumbled upon people who preferred to sign most of the time, and then I felt so much more comfortable and happy. I wasn't unhappy before, but looking back on it, I wish I had more exposure to ASL in school.