I want you to know how sorry we all are that you have lost a grandson. I have twin grandsons about that age and I know what an awful hole it would leave in my heart.
others have said that it will be a way to deal with the grief, and it may well do that , but if it becomes too emotional for you, then set them aside and give yourself time to grieve. I think it will be a wonderful way to remember him but if it is too hard to do, give it time.