LR308 build help?

I am posting to GD as I do not see an AR10/LR308 specific forum. If in the wrong spot, please feel free to set me upon the correct path.

So a while back I scored a DPMS LR308 lower. Now, I am not an AR guy, but have the LPK in hand and I have ordered a Magpul PRS stock for it. I need a tube, buffer & spring... I think it is the A2 length, so would this work? http://www.brownells.com/.aspx/sid=5...Completion_Kit ?

Building my own upper is an option as I have the barrel wrench and upper vice mount, but will probably purchase a ready built. I do not think I could save any money building my own, but it would be a good experience...

Any help would be greatly appreciated.

Regards,

-two shoes