Thats excellent thank for those suggestions. Im still wondering about what material to use and how to present it. I am thinking that two tracks might be good, for students wanting to take RCM exams, use the RCM theory structure with exam dates as deadlines, so lessons can be set up more as modules with a certain amount of lesson hours, or courses that occur three times/year, with exam dates in Dec, May and August. These can be advertised as private or group classes.
There would also be a structured lower level theory course which is integrated with lessons and prepares students for the RCM exams. From grade 6 students can opt to have separate theory lessons.
The second track would be for what will most likely be the majority of students who, in my experience, are more motivated by just playing popular songs that they like. This could include some degree of integrated theory with lessons, as is done in the Hal Leonard series, they do this very well with many games and activities which makes it all more appealing. First track students would probably do something similar at this stages, everyone prefers candy coated theory

An aside: for sight reading, I use the new ABRSM sight reading app, which is excellent, all specimen tests from gr 1-8, an adjustable metronome counts you in and then continues to count the beat throughout, bars disappear as they are passed though. That is the best feature of this, and I have been looking for something like this for ages. But like all good things, the weekly routine can get boring, and variety wins over so finding different ways to present the same or new material always becomes the challenge.