I pulled it up on amazon and will most likely buy it but let me ask you; does it get alittle more advanced early on after the sounding out of letters? Teaching an adult is different than a little one, as he’s had some schooling (although the schools are pathetic). He knows the alphabet and sounds of letters so I don’t want to get bogged down with things he’s “mastered”.
I would look at Corrective Reading by Engelmann then. It is designed for older emerging readers. I should have remembered it as I used it to teach 2 5th graders with it. This would be a better choice. I believe there are 3 levels, A, B, & C. You would need to get the teacher’s guide as well as the student book. Good luck.