I looked at the product at local Northern Tool the other day. According to the specs, for my application the 1/2 would be adequate, BUT, the lines look very small to me, and then I found out the ID is actually 3/8 (a little misleading IMO).
I use the usual air tools: orbital sander, die grinder, and paint spraying. I do occasionally use air wrenches.
The compressor is 5HP. The run to the wood shop is app 30. The furthest run is about 45 that will be mostly an air station for painting.
Im leaning toward going ahead with the 3/4 kit. My mind is telling me with the distance air flow would be degraded.
Thanks.