Looks like it's a rocking piston or "WOB-L" compressor as they have it labeled on their site. Output among most of the 2600 series at 15' would be over 3 CFM Figure each diffuser needs .5 to .8CFM and my two cents is you are in the clear.
But not being an expert on the topic there are other considerations some articles if you haven't already read them that I found interesting.
