hi Josh,
I am sure that won't be a problem, birdwatching is an activity for all age!! I started birding when I was about six...and my first Mai Po visit was around 7 or 8 (I can't remember)!! So, I am sure that won't be a problem!!
It is always good to see more young birders!! It is important that some of the younger generation appreciate nature.
Cheers, Matt