Optimizing my cartoon

Hello people. I am new on this forum, but worked with Flash in few years. I use Flash alot to make animations, but I am still new to optimizing the filesize and performance of my cartoons.

Before I used to use Pencil and Line tools alot to make outlines, but desided to use Brush tool to for that, because it looks more natural. The problem is though that brush makes the swf file bigger and I have a theori about that it is because with the brush I get more vector points. And now I’ve allready made many drawings with brush tool and want to keep them.

Do you guys have any tips/suggestions about that? I sure want to keep the filesize as low as possible, but still want to use brushes.