Painting a new fence will not work very well by just spraying it. The paint needs to be worked in the rough lumber. If you like black then one of the best things I have seen used is Asphalt driveway sealer thinned 50% with diesel fuel. Then roll or brush it on the fence. When I mean brushed on I mean with an old broom. You are not doing trim work here. Five gallon bucket and a broom just about half worn out will work great and is not really that much work either.
Every spray painting setup I have tried to use with any type of asphalt paint does not work very well.