None of the Beautiful Feet Books study guides can be counted as "literature." They are all history; they just use good literature instead of textbooks (even if a textbook is used as a resource).
If you like the way BFB does history, go ahead and use it. But you will need to use something different for English. At the high school level, it is expected that each year of English will include composition and literature (and grammar, if needed).
Most colleges (not all--you have to verify with the colleges to which your dd apply) only want transcripts, not course descriptions or a list of materials used. IOW, in most cases, colleges will not know that you used a BFB study guide for history (they won't even know what "Beautiful Feet Books" is), so you don't need to worry about whether or not a college will "accept" it.