@idealtrucks 

The distance should not affect them. Only if they were placed in an area where there is now a building in the way.

Similar to installing security cameras I would recommend temporarily mounting them in case they do not work for whatever reason.

@idealtrucks What should power settings be for such a distance?  Just trial and error? 

@idealtrucks 

The manual for the CPE210 states:

"In most scenarios, it is unnecessary to select the maximum transmit power. Selecting larger transmit power than your need may cause interference to the neighborhood. Also, it consumes more power and will reduce the longevity of the device. Select appropriate transmit power to achieve the best performance. You can use the Speed Test tool to find the best performance"

In referencing that, I'd probably start on the low end, perform a speed test, then move the slider to the middle and test that, and gauge from there.