Sounds like Boyds is going to be your best bet for both $$$ and for functionality. Most of their laminate stocks run about 2.8-3 lbs of added weight though. For a hunting rifle, that one is going to be carrying or tree standing, I am going to say "stay with the Tupperware stock".

I have the 111 Trophy Hunter XP package chambered in 30-06.... It still shoots 1 MOA out to 200 yards which is about as far as we usually take shots in my country. Unless you plan or stretching it out to 400 yards or more, you may want to just stay with your current setup? Maybe put some better glass on it than the Weaver 3-9 or the Nikon 3-9 that comes with the package.

Just my .02,