Hi Lisa, it's a little difficult to see the screenshot but, I haven't used Neon Wizard in yrs. now that they came out with leds. Your settings are in (mm), make sure your your dxf export settings are set correctly you can export example of a 1' diameter or a square to make sure everything is being imported correctly, but from what I recall yes the numbers on the right are the linear ft. of the run.
Hope this helps a bit.
Henry Z.