If you need the extra range of the .300WSM, then stick with a rifle that is around 8+ lbs (22 inch barrel) with the scope and mounts. Won't kick the crap out of you, and the 22 inch barrel is minimum I'd recommend for 300 WSM. That sucker will shoot a long ways.
+1, esp. with an effective muzzle brake ... and there are plenty to choose from. I understand it's not for everybody but an effective muzzle brake installed reduces felt recoil and muzzle rise significantly; being able to spot the target on impact is priceless.
I have a Savage 11 FCNS with 22" barrel in .300 WSM (my 1st and only WSM ... thus far ) with Benchmark tactical MB installed pushing the 215 Berger at 2750 FPS and the felt recoil is similar to .243s.
Cheers!