I love that you are making/having made a quilt for your Dad. I also love the pictures on it which your Dad will always treasure - definitely print them, not iron them on as they will last longer.
Another suggestion - make sure you and your family members each sign a block and maybe write something special to your Dad. It could be as simple as telling him that you love him or maybe a memory of something funny that happened a while back.
My Dad passed away suddenly last year and he was my hero and rock. I had made him several quilts but his favorite one was the one I gave him on his 70th birthday, and his last, that I used old fashioned trains in it and put minkie on the back - I insisted that he be buried with this quilt and keep him warm forever and it gives me great peace that it will always be with him physically.
Good luck and I cannot wait to see the final result of your work!