Amanda,
This all sounds like great news. It does feel a lot better when a plan is in place and treatment starts. It will all be over before you know it. Just stay the course. He will probably be seeing doctors every week to monitor his progress. That is a good time to ask any and all questions that any of you have, and let them know if there are any concerns or problems. It sounds like you have a great team in place.
When you and your mom come into town to see him, can you guys leave and go to a movie, shopping, or go out to eat? Just something to think about so he doesn't get bored and pass time quicker.