What cuties, your daughters
You sound like great parents, and I admire you for trying to have a well thought out plan for the girls. I'm from a fairly large family - 5 older brothers and 3 older sisters - so I understand a little about your background. I've also raised 2 girls and 4 boys. Having been a Den Leader to 15 energetic boys, the Girl Scouts may be fun for your daughters.
The main thing is to spend as much personal time as you can with them.
Today's economy doesn't always allow for both parents to be with their children as much as when I was little (most mom's were homemakers), but for me, I noticed how much better school work, social skills, etc. improved when I was with my kids until at least middle school. (I still work FT and go to school, so it's a matter of juggling things.) Kids need structure and guidance -- even if they tell us how much they already know - lol
Best of luck to you... I'm sure they're going to grow up to be well-adjusted young women.