Remember, you're only talking about 100 acres. If you have 3 does, then you most likely have a buck and at least 1 fawn. Those 5 deer equate to a density of 20 acres per deer, which may be all you'd want to have on the property depending on habitat, grazing practices, etc. Plus, I'm sure there is more than 1 buck and probably more than 1 fawn, which means the density could be excessive relative to the habitat (just depends on how many deer are actually using the property). Management decisions on small acreage can be difficult as deer are typically managed (population-wise) on a larger scale.
The recreational value of game is inverse to the artificiality of its origin - Aldo Leopold