Brandi,
I have just a little time this afternoon, so I'll just weigh in with my thoughts on this topic. Just to clarify, the reason this discussion is a board topic that is allowed is because the high school HOD guides have not yet been written. So, for those who are using HOD for high school, we strive to provide as much help as possible in making the guides work for high school with some tweaking.

As far as SMARR goes, American literature is the area in which the guides from SMARR begin to be more heavily influenced by Watson's Southern agrarian leanings (so much so that some of his opinions really interfere with the readings of the books). This posed a problem for us as we headed into American literature this year, so for our own oldest son we ended up using BJU American literature interspersed with the reading of 5-6 full-length American novels.

This is a challenging, but rewarding course of study so far.
We are enjoying the higher level questions posed by BJU and the chronological tour through American history via the various authors who wrote during the time period. Novel-wise, you could consider books like The Autobiography of Benjamin Franklin, The Scarlet Letter, Red Badge of Courage (which does include some offensive language), Up From Slavery, The Old Man and the Sea, and The Mouse That Roared. By reading these in conjunction with the many authors included in BJU (in the form of letters, short stories, poems, and journal entries), your student would gain a solid look at American history through literature.

This is of course just one possible option, and we have yet to get through all of the novels I've mentioned above, but at this point in time it is the plan we're using and enjoying.
Blessings,
Carrie