I have a friend who used Angelicum for one of her high schoolers and Mother of Divine Grace for another. She had good experiences with both. The boys have different temperaments.
My plan is to do Seton for grades 9 and 10. For grades 11 and 12, I plan to do a hodge podge of online classes, CLEP exams, and dual credit classes. My oldest son is in 10th grade right now. I also want the kids to do lab classes for science, so we'll look for dual credit or high school class for that.
I plan to make up our own transcripts and diplomas. From what I have discovered, it is not necessary to have a diploma from an accedited school to get into college or the military. But, another option is to do Clonara or North Atlantic Regional School. They will authenticate a course work.
Ironically, the part of Seton's high school course that I dislike is the Religion Classes. I just think they are repetitious and a little boring. The presentation is dated. In high school, I think it's time to move beyond basic catechesis and work a little on application.
The thing I like best about Seton is the services and price. Most of the Catholic schools don't provide as many services. And, the secular programs with services are priced much higher.
As far as the Seton workload goes, we choose to omit some assignments. That's helped alot.
God bless your family's discernment.