New whoopin stick

More than a pound. Depends on the scope and rings.

I wouldn't worry about the weight. You'll never notice the recoil on game and you ain't exactly buying a target rifle.

If it were me, I'd by one of these: http://www.winchesterguns.com/products/catalog/detail.asp?family=001C&mid=535108

No plastic parts on this one and its a little heavier if your worried.

Well I think he's looking at a wood stock anyway.

But the bolt shroud is made of plastic also, and if you type "tikka t3 plastic bolt shroud" into a google search you should find some reading on why it isn't a really great idea.