To better address my point of range estimation I should rephrase my first post.
Duplex reticles are not ideal for range estimation. My best range estimation is also usually done at the highest power. They commonly have 5 moa between the crosshair and bold post. Using a 5 moa subtension for range estimation would make it more difficult. If you are off by a little with your measurement it could result in a big miss. I always carry a range finder, but they dont always work. Fog, rain, and target size can make them useless. I try to practice my range estimation with the reticle during every session (If you dont use it, you lose it).
I understand you shoot at closer distances, so some of this stuff does not seem necessary now, but you may want these things later. I still think you should avoid the m308 for LE use. I would agree that Vortex is a great budget scope. The zero stop and reticle choice would be nice options over the nikon. The vortex would probably be easier to sell one day too. I would take a used Vortex pst over the Nikon.