I feel like the new kid on the block, and frankly am a little intimidated by some of the wonderful things I hear all of these children doing.
I hope you don't get scared away. For me, reading about some of the amazing things that other kids are doing sort of puts things in perspective. The good thing about this forum is that everyone is free to share their stories - it is hard sometimes in real life. But my favorite part of this forum is the sense of community and belonging, which I hope you find as well.
It sounds like you've got a science kid, too... what are your/his current favorite books?
DS7's favorite science books so far have been the Simon Basher series, esp. The Periodic Table: Elements with Style. He's now into Life of Fred (math) books. He's also just getting into watching some of the Khan Academy science videos. This is definitely a great place to find resources!
I can relate to the mischief! Glad you're prepared.