Why not the Remington 700 AAC-SD? Cheaper than the savage you listed, and has a 20" barrel with a 1-10 twist. it's also threaded from the factory.
1:10 twist (not 5R), threaded heavy barrel Savage is cheaper than the 700 AAC-SD : 10FPSR-LE
As far as "which Savage" - a close friend of mine came up to me with the same question and we are starting with Hog Hunter.
B&C stock, Farrell base, Warne rings, Vortex scope - I will post build pics in another thread.