He said 1 acre, so it would seem he needs a minimal system.
I'd be looking for a compressor that will do 2 cfm.
If we assume 2 cfm /6 psi at compressor and 80F...
600 feet of 3/4" ID line will have a 0.5psi loss.
If you drop down to 1/2" ID line, you're looking at 2.5 psi loss.
You can get a 500' roll of 5/8" poly tubing at the big box store for $60. May consider going up a size, but it would suffice.
