Lynn,
I agree that it is so nice to be able to flex within a curriculum to find the best fit for YOUR family, without losing the steady progress forward.

We are enjoying full-speed right now with a highschooler, a sixth grader in RTR, a second grader just finishing Beyond, and a 4 year old in full-speed LHTH. However, last year, we did half-speed LHTH, 4 day a week Beyond, full-speed CTC, and full-speed RTR. I love being able to find the right fit that each new year brings with its special circumstances and needs, yet being able to find that fit within the HOD guides we're using at the time! It gives me structured flexibility.
Blessings,
Carrie