use 3/8" air line. DO NOT use the automatic oilers. just put a couple of drops of oil in your air tools before using them once in a while. the automatic oilers are crap. if you want, you can use a filter to trap the water from the air hose, but its not really a big deal unless your painting stuff where you dont want water in your lines. as long as you oil your tools, you should be fine. 10 cfm is alot for an impact gun. my 1/2" snap on gun uses about 5 cfm.