Chris and Sam both have speech therapy and Chris also goes to physical and occupational therapy every week. We're still going to our homeschool co-op every Friday (and we love, love, love it!). The only days of the week we're not running to appointments are Tuesday and Thursday. So... Montessori all day Tuesday and in the mornings on Thursday. Thursday afternoons I've reserved for excursions into the mountains, sagebrush, visiting, and exploring. Those activities are our favorite part of homeschooling.
I think it's going to be so good for them to interact with other adults and children without my constant presence. They're not old enough that I'm ready for them to be gone several days during the week, but this seems to be a perfect situation for us. It's also terrific that the Montessori approach to reading and math are exactly what we're already practicing in our home. :-) This situation is better than I ever dreamed I could find for our family. It allows me some freedom and time to schedule my own appointments- but it doesn't turn over my kids education to someone else. This feels right.