Kid Actor?
Needs to be in his teens..but at least one that knows what the **** he is doing. Don't want it to end up like Diary of a Wimpy Kid
There are plenty of Chinese dramas of it. And movies based on tiny slivers of that period; but you can't expect even a 3 hour epic to include everything. Try Red Cliff.
I'd imagine a few movies for it...like LOtR
As for Red Cliff..I plan on watching it..but I have my reserves. Read a summary from the back of the movie and it seems that it completely favors Cao Cao. I also imagine it would focus a lot on the action and not the impactual significance that battle had for the war and the strategical workings of Zhou Yu, Zhuge Liang, and Pang Tong (as well as minor, but oh so important scenes where Zhou Yu tries to outsmart Zhuge...only ending when Zhuge pretends to be outsmarted so that Zhou could focus on the battle)