I hope that your son is doing well! I too have F508/D1152H. I am 22 years old, have graduated from college, and am employed full-time!
I have had sinus infections basically continuously since preschool, and I started having problems with frequent acute pancreatitis attacks in my adolescent years. I have also had more lung issues than most people, but I am nowhere near the point of needing a transplant or anything. I am often frustrated with the illness, but my life has been pretty normal! My social life has been only minimally affected. I played sports throughout my school years (and still work out regularly), and I graduated from college right on time!
I see a variety of doctors regularly. I am on a variety of maintenance medicines, I am almost constantly on antibiotics, and I have to use a nebulizer and a cappella twice daily. However, I have no complaints. I realize that I am faring much better than most with CF, and I hope that the fact that your child and I have the same mutations means that your child will fare as well as I have!
Please feel free to post back with questions. Or post your email address, and I'll email you if you have further questions!