Advice on Adding American History to Ancient

I was hoping for some suggestions on adding aj American history stream to our SCM Ancient guides. In a perfect world we would follow the progression of the SCM History guides. I love the slower pace that helps us live with a time period and leaves room to add in more when we can. We REALLY enjoy this. But this is not a perfect world and I have to get those pesky credits lined up with my state’s requirements. I had planned to do Egypt/Greece/Rome in one year with my 6th and 9th grader. Yeah right, when I have I ever gotten ahead in any curriculum? I thought I was doing pretty good, but realistically we will only get through Egypt amd 1/2 of Greece, which I am actually pretty pleased with. So I think I will not be able to get my 9th grader the American history credit she needs at this enjoyable pace. I really do not want to skip ahead. And the last three guides are a lot more reading so I don’t really think 1 1/2 per year is reasonable. So what can I do? I have considered switching to a 4 year cycle with another publisher, but I really do like SCM. These are my ideas:

add Notgrass History for high schooler, continue the 6 year cycle for family. Let high schooler skip her SCM readings and just do the family portion.

add Ambleside American only in addition to our SCM cycle

add SCM Early Modern/Modern for high schooler, just the independent assignments and include her in the ancients family cycle.

piece together my own American booklist to add to her readings.

add just the modern readings, assuming we can get through Early Modern by senior year. Use the ancient readings as her literature credit and include modern as part of aj American credit.

stop worrying about it, give her one full credit for American with the EM guide and no world credit, Maybe have her do all of Notgrass that year in addition to he EM guide.

Any suggestions, comments, advice?

thanks!