I'm not going to do any more triangles, or change the size of the ones I have done. I sat down with some paper, and also looked at some of the examples of quilts in the book and the software book. The triangles as we are doing them are supposed to meet at their bases to bridge the little gap that the half inch sashing creates. All that I will need to do is make the plain triangles wider. If this is the case, they won't go to a point any more, they will have a short sraight side where the point would have been.
Then, if you compare the scalloped borders in the software book, you can gain another two or three inches if you do one like 'The Spirit of Jane Stickle' compared to 'Perseverance'