School systems differ, of course, but I think what you have written combines parental concerns, accommodations, and even some goals and objectives. Which is good, because you want your concerns to be reflected in all of those places, and a good IEP can draw clear lines between the parental concerns & child's disability needs, and the accommodations & goals. However, my concern would be that these are legally defensible only if they are in the accommodations and goals, so if they are not already there, a discussion about that might be in order.
On your wording: perhaps something like "work toward independent use of assistive technology for writing." What would you hope to see him accomplish in a year? That's usually the time frame for parental concerns. If you don't think independence is likely in a year, a variation might be, "with direct instruction, become proficient in supported use of assistive technology (e.g., Snaptype, speech-to-text, keyboarding), with the long-term goal of independent use of AT for writing."
