I really don’t know as I have been in your shoes, and still am. I have a 13yo who kind of struggles with spelling, well, I think so. He misspells pretty common words, but sometimes I think it’s just a laziness (in this area) or lack of attention/detail in this area. His penmanship is neat/tidy, he is a motivated kid, just struggles with remembering certain words, etc. Anyhow, I have AAS and SW. I tried AAS and as you mentioned it is a little young for their age, but was encouraged to not skip the lessons, just go through them quickly. I had not understood the program very well and intend to retry it, in the meantime, we’re back to SW. I have bumped up his copywork quite a bit and I believe that is helping as well. So now he has SW and 2 Queens CW books, which he likes very much. He prefers the copywork to be from Queens and the “spelling lessons” to be SW. He just goes over the unfamiliar words and works on those. I believe if we keep this up it we will see some marked improvement.
I haven’t counted out AAS, but I have been overly busy these past 2 weeks to add it in again, but I plan to.