+1 for following your daughters' lead in terms of interests. As long as your core academic subjects are being covered adequately in school, your girls will probably benefit most from spreading their wings and delving deep into their passions. To me, as a former full-time homeschooler, and now active after-schooler, the hours outside school are where creativity and deep inquiry gets to flourish. It's so much fun!
If you have some insight into current interests, we may be able to help you more.
I will add this--for the budget-conscious after-schooler who craves exploration, there are some great VR tours of world-class museums available. This weekend, for instance, my DS and I are "visiting" the Egyptology artifacts section of the Louvre as part of a history project.
(Link:
http://mentalfloss.com/article/75809/12-world-class-museums-you-can-visit-online)
