I have a custom Rem 700 in 300 RUM with Jewel trigger. Shoots very well, but I have a Savage LRP that out shoots it, I am sorry to say.
Just finished my "weekend" build on a Savage 12 VLP action, Just like the one you are considering. The 12 VLP actions are very good as the accutrigger goes down to 1.5 lb pull. The hunting actions just go down to 2.5 lb.
I would not get a Rem 700 action and have it worked on so it will perform. You may or may not achieve what you were wanting. If I wanted a 700 style action for a build, I would just get a custom action like Stiller or something. Otherwise I would use the Savage 12 action you are looking at.
Below rifle is:
Savage 12 VLP action 300 WSM
HS Precision stock
McGowen 26" bull barrel
Darkeagle 5 round mag (Works perfect and uses the Savage bottom metal.)
Vortex PST scope
300 WSM and first group after 1 fouling shot. The horizontal was my fault.