Planning for next year, but keeping it girl-led

My troop just bridged to Juniors. We aren't having regular troop meetings during the summer, but I'd like to get a head start on planning for next year since I'll be a lot busier once the school year starts. Does anyone have any tips on how they've balanced pre-planning and allowing the girls to become more involved in decision-making and planning as they get older? (As Brownies, I chose three badges for them to vote on whenever it was time to pick a new badge.)

As a basic framework, we formed a new Brownie troop last year of girls who were new to GS and generally met twice a month for 90 minutes (covering each badge over two meetings). We plan to continue that frequency next year, though I also plan to schedule separate meetings for girls interested in working on their Junior Aide or Bronze Awards due to the extra time required for those. I'd like to plan to start a journey early in the fall since our troop has never done one and it will be helpful/necessary for those pursuing JA or Bronze. I also plan to have each girl/family sign up for one badge during the year to plan/lead the second meeting for.

What strategies have worked best for letting your Juniors decide their troop's direction, badges, etc? Has it allowed you to plan very far in advance? How do you make big-picture plans for your troop's year while still letting them take the reins?