For math I really think that Right Start Math is the best choice. The downside with it is that it does require LOTS of parent input time. However, teaching only two, it might work with you.
Right Start, is just the best for explaining, working with full understanding of math, training mental math, etc. etc. hands down winner.
Of course, I no longer use itsince I no longer have that much time.
I homeschool 5, ages 15 down to 5, all boys.
5 BOYS......![]()
I have 3 boys. I have not heard of that one I will have to check it out. The Robinson program is a mostly self taught program. That is one reason it really appeals to me. I really want them to do as much as they can on their own. I know the first few elementary years are different. We are just going to have fun.
My first two weren't capable of doing anything on their own in the elementary years.

At this point most of them do their work by themselves, I sit in the middle of the room and crack a whip. (Metaphorically speaking)
For "do it on your own" my favorite math is teaching textbooks. All on a disk on the computer, with immediate positive reinforcement of a jumping animation. Good for my instinctual math learners and my "learning math is as easy as slamming my head into a brick wall" learner.
Except for math, we are very eclectic learners.
Of course, now with a high schooler, we have one internet class, will have to do two internet classes next year.