welcome to VR and thank you for getting as much information for your 'little' boy as you can. He is young and if his physical condition is good, he should have little trouble in recovery. He'll be sore, he'll have a few rules to follow to begin with (no lifting more than 5# at first, then 10#, then 15, etc), no driving for 4 or 5 weeks; he must exercise, do lots of breathing exercises, take it easy for awhile as recovery can be awhile and as mentioned here, he will be weak but strength will come back soon. He might want to sleep in a recliner once he is home as laying in bed can make him uncomfortable, but it can be done. He won't need to take much to the hospital - we have a thread on what to take to hospital. He will have a team following him all the time he is in the hospital, but you might want to be there with him as much as possible so that you can be his advocate.
Of course, we will have others coming in to welcome you and tell you of their thoughts. We have become a very large group and most of us have something to say.
If you have anything you can think of to ask, then ask away.
If you can get him to come in, too, that might help to ease his fears. He will soon discover that so many of us went through every single thing he is going through and he can talk and know that he is talking to people who know exactly what he's saying. Blessins.......