The Tallas is a pretty killer fork man, if your doing all mountain kind of stuff they are right on the money.
AS sponge bob said, check out the website and ur LBS for weights, but for whats its worth i run revelations and they are an awesome all mountain fork. Light, responsive and versatile. My only complaint is that they arn't as stiff as perhaps they could be. Still i personally feel that revs or even a pike are a little step down from the tallas.
And i dont think lyric will make u happy if the tallas is already too heavy!