Read this thread. I have read every single post in that thread. Tons of questions and testing. Like Kwikfab said most people do the aftercooler. Questions is before the tank or after the tank? All explored in that thread. What I have discovered is at a minimum you will need 2 solutions. If you get an oil water separator you will also need a motor guard or desiccant dryer. If you do and after cooler either Cooper tubing or Transmission cooler you will also need a water separator..
My system worked fine for over 2 years with just a 2 stage Nanpu water separator. Last 3 months I have had all kinds of anomalies. I now have a transmission cooler, 2 stage water separator, and a motor guard filter. Getting the hoses together to get the transmission cooler installed. Most popular one is a Derale 15300. I just got mine on amazon 2 days ago for $71. says cheapest price in 30 days. My 2 stage Nanpu was $74 (2 years ago), I just got the Motorguard M-45 kit for $101 (last week). I’m going with flexible braided stainless steel hoses. I want to mount the cooler on the wall to avoid the vibration from the compressor some people have had there inlet or outlet break due to the start and stop vibration from the compressor. I using flexible hoses because I suck with cooper and I want some flexibility in location. If you just a hose you need one that can handle well over 300 degrees. Many air compressors the outlet form the pump is right at 300 degrees. I hope some of that helps. I got luck with a few low humidity days and was able to finish up the rush cutting I needed to get done