Where would be the absolute most logical place in USA to observe the total solar eclipse on August 21, 2017? Cloudy weather would defeat the purpose so I am guessing that the western states would be more ideal due to greater chance of clear sky.  Isolation would also be nice.  At a camp site on or near a mountain top.  Also, are there efforts to set up mobile solar observatories in the totality path?
I assume that when considering where to view the Solar Eclipse from, you're looking for the place with the best observance of totality. This elicits two factors, the degree of totality and the time elapsed during totality. The best observed eclipse will be a total eclipse, i.e., 100% totality, and for the longest time possible.

A map of the path of 100% totality is shown below. In it, you can see that grey band that passes across the US. Anywhere within that band, you'll be able to see a 100% total solar eclipse.



If you view this interactive map from NASA, you can see two specific points along the totality band that are called out, one labeled GE and one labeled GD.

The GE marker signifies the point of greatest eclipse which is defined as:


  The instant when the axis of the Moon's shadow cone passes closest to Earth's center. 


The GD marker signifies the point of greatest duration, quite sensibly defined as:


  The instant when the length of the total (or annular) phase reaches a maximum along the central path of a solar eclipse.


So, if you're looking for the point of 100% totality that lasts for the longest amount of time, you'll want to be at the point of the greatest duration. Geographically, this is pretty close to Carbondale, IL.