I read this and almost cried. I think getting the rov involved is important, or maybe gently ask one of the aveilim to daven next to you and you can say it together.
But this makes me wonder, what if there is, lo aleinu, a child that has to say kaddish? I dont know what age a child has to be to say kaddish, but even if its a 13 yr old, how can they keep up with the adults who can read the difficult words quickly without a problem?
May we only have good things to share.