I used to know a family well who used the American Classical Christian Education. She asked for my help a couple of times (I am teacher)
I can honestly say that the curriculum as I saw it was unbelievably boring. This may have been her presentation, but one of her big issues was getting her son to be motivated, and it was all I could do not to say 'change to a more interesting curriculum then'
It also had some points that I was very dubious about
No science at all until secondary. In uk at primary they will have done all sorts of interesting science stuff - my dd age 7 made James Bond trap where you stood on the hidden step and it connected an electrical circuit which set off flashing lights and alarms. Also magnets, plants, growing seeds, floating sinking, etc etc. This curriculum did not one single science thing
Also none of the creative stuff - art, music, dance, drama etc
Also the English part didn't teach the children how to write stories at all. In fact they were not expected to write anything or substance really. They believed that children should learn to write by copying real writers, so a 6 year old had to write a short paragraph copying a greek myth, which they really found difficult. How about starting with writing things that you know, and once you have the idea of getting ideas down onto paper, then broaden out?? Older children never wrote more than a paragraph.
If you do choose this, please, please look at it carefully and be prepared to add on lots of things to it, as well as change some of the bad parts. There are lots of good curricula out there.