Ideas on Air Compressor , not the usual questions

[El Campo]

Recently bought a big (for me) Devilbiss compressor with an approx 200 gallon tank and a big pump on it. Now my other little cheap Homey depot 3.5 HP 80 gallon compressor shelled out on me before had chance to plumb in the big compressor. Thinking about running line into smaller tank and using it as an extra reservoir. What would be a good distance from the big compressor to do this? The big compressor turns slow (around 700 RPMS) if I remember correctly so it shouldn't build up too much heat the way that smaller high speed compressors do but would still think that the auxiliary tank (the 80 gallon) would assist in cooling the air possibly. Thoughts?