I still think quickdraw's deal sounds better. He knows his LR stuff and would not steer you wrong. The Detachable Bottom Metal (DBM) & mags is a very nice upgrade. The Magpul stocks are still vapor-ware and require a DBM upgrade and proprietary mags that aren't included in the opening price-tag.

You may consider a higher magnification optic too 10x is not a lot, 15x or 20x is nice to have...
Take a look at the SWFA 3-15x similar price and a better optic.

I would pass on the GG&G rings in favor of Badgers/Seekins/EGW/TPS/Etc The "Sniper Grade" thing just sounds wrong...