Too many options
That's the big problem for home school. There are just too many things you can do. I find that for me and mine, home school works best with a moderate amount of structure. The structure that worked well for me had some everyday things, and some things that happened every few weeks, every week, or a couple of times a week.
The daily things included a number of things: saying the pledge; a PE warm-up; finalizing the day's agenda; a math period, with a timed drill, mental math activities for about 5 minutes, and a problem set for up to 45 minutes; a language arts period, with spelling words, a quick-write for about 5 minutes, composition for up to 45 minutes, and about 10 minutes of coaching using the 6-traits +1 format; and working on a project, which focused on history, science, OR literature, and provided a utilitarian motivation for research, writing, and the arts. A project should have a deadline, between a week and a month from the beginning. I also liked requiring the kids to memorize and recite a poem or to write or make a book report a couple of times a month.
I tried K-12 last year. The interface was kludgy, and their insistence on 6 hours a day of 'seat time' just made it so I dropped before the end of the year, so that my daughter wouldn't have an F on her record. Just like traditional schools, where K-12 is used as a tuition free charter school they get reimbursed on the basis of instructional time (time logged on the computer), so I think it's a waste of taxpayer dollars.