Geez, that's resurrecting an old post/thread. 8 years back, you must be doing a lot of reading.
This subject comes up periodically and you will find that we have people that zero their guns from 100 out to 500-600 yards and all have reasons for doing so that fit their hunting/shooting style and that works for them.
My logic is that for the long shots I'm going to be twisting the turrets so I want my gun zeroed at a range that allows me to take a quick shot without worrying about dialing and know that out to a certain distance that I'll make a killing shot.
Most of my long range guns dictate that if I am zeroed at 300 yards, then anywhere from the muzzle out to about 400 yards I can quickly take a shot on a big game animal. This doesn't mean this is the way everyone should do it, it just means that I'm comfortable with this and it has been that way so long that it's all automatic in my thought process when a shot presents itself.
Depending on what you are shooting you can zero at just about any range if you know the results of doing so and that you haven't zeroed at a range that will cause you a problem if presented with a quicker than normal shot.
I guess what I'm saying is, do what works for you. If you don't have a ballistics program, there are free ones available and you can see what your zeroed range and your gun will do at all different ranges. This should all be predicated on having already accumulated proven field data for your decision.
Good luck with your new build.