The spray adjusts from wide to narrow; the narrow spray will travel farther than the wide one will.
I'm sorry, but the minimums for 14.0289 foamer are 3000 PSI and 2.5 GPM; I don't believe you'd get the performance you're looking for with the unit you mention. However, the MTM Hydro Long Range Foamer should work just fine, as will the BE Long Range Foamer.
If your pressure washer has a female quick connector on the end of the wand you wouldn't need an adapter for either foamer.
If you don't need a thick layer of foam, you may want to consider a 2nd Story Nozzle Kit to spray and rinse soap up to about 20 feet.