Built a M7 - once. Worked well. Used factory deluxe stock. Pillar n glass bedded.
Would I repeat? Not likely at all. Far more latitude in 700s... ie user friendly parts etc.
Re: weight. Scope choice. Barrel contour. Stock choice (hmmmm less options) all make +\- a few ounces diff
Value? Whatever a buyer will pay = selling price.
Resale in a build? Likely less liquid n less $$$ on a 7.
