I am a little late to this party, but for the lightweight part... a Kimber Montana is my choice, Tikka's are good, owned a couple, but the Montana's fit me better.
I am a big Model 70 fan, and have a Classic FWT in a McMillan Edge FWT stock.
I also have a Kimber Montana in 338Federal.
Both with Talley lwt rings and Leupy 2.5-8's.
Model 70 is 7# 2oz
Kimber 5# 13oz
I plan on doing some backpack deer hunting this fall. I will be carrying the Kimber in 338 Federal loaded with 180gr bullets.
Find a Kimber Montana in the cartridge of your choice and have at it.
