If you are putting one large bedding sanctuary on a property lines you are creating the benefit for you and your neighbors. You would be better off creating screens (double row of pines, hybrid poplar/shrubs, Micanthus, etc) to put of visual barriers.
For Spruce plantings, consider making multiple clumps. On your size property I would target to have 10-12 clumps of spruces spread through-out the property. This would allow for more individual doe groups to exist and thrive. Look to locate these where there is a south exposure or adjacent to travel corridors and transitions to food. The # of spruce in each clump can vary from 15-50 trees. Planting in staggered rows and irregular patterns at 12' x 12' spacing allows the lower branches to survive which creates better thermal cover by blocking the wind. Once you have mature spruces, you can go in to the internal area and cut lower branches off to 5' above the ground. This creates over head cover for bedding from snow.
The goal with multiple interior bedding clumps, over one large sanctuary clump, is to encourage buck movement throughout your property as they move to scent checks multiple bedding areas. You can then position your bow or gun stands to intercept them.