It's our first year homeschooling a daughter around the same age, and we came from an accelerated program in public school. Some of our favorites this year so far:
Critical Thinking Co Detective Books (there are some that are just regular 'detective', also detective math, detective vocabulary, and detective writing - note that the "science detective" is super boring, it isn't fun puzzles like the others). We have Basics of Critical Thinking slotted for this spring.
Khan Academy Middle School Science - we are going through all three courses this year (earth/space, physics & biology) and doing the activities/labs as well - this is a very, very well organized free resource and it's helping us identify her interests for future science choices. We started out with interest-led units like Campfire Curriculum Meteorology, Real Science 4 Kids Middle School Astronomy, and Big Data by Carla Mooney before discovering Khan Academy. We'll still have time for The Elements (chemistry by Ellen McHenry) in the spring too.
MENSA Excellence in Reading program (we read from the grades 4-6, 7-8 and 9-12 lists with whatever is interesting at the time)
Typing.com and Code.org Express Fundamentals Course to keep up with what she had started in public school (she loves coding and will join the local robotics club next year)
Story of the World 3 - this is where we're at since we did 1 & 2 as read-alouds during our afterschooling years. The activity guide is amazing and we really look forward to history.
We also do a lot of art (through co-op and any art activities in our other topics), and she just recently asked for explicit art instruction twice a week, so we're looking at Artistic Pursuits next.
Math: Saxon 7/6. It's tried and true, and that's where she landed via placement test. She actually started with Art of Problem Solving after placing into their Pre-Algebra this summer, but we learned after about 3 weeks of it that she needed more direct instruction, and the 'discovery method' with pages and pages of instructions was not going to work (same reason we dropped Writing With Skill 1 for IEW Structure & Style Level B Year 1). Saxon is pretty 'open and go' once you figure out the daily rhythm and she does this mostly independently. The 'investigations' in 7/6 are well done too and a nice break from the regular lessons. I taught engineering at the university level and am completely confident with the Saxon method until we'll diverge for high school honors & AP math.
Good luck!