Need a new air compressor

I have a Husky at home. 5hp 60 gallon. Only single stage tho. I dont sandblast at 90, I try it at 50-60 psi 1st, then go up if need be. Media lasts longer that way I think.
At the water plant I run we use a Quincy to operate some plant equipment. We use something else to run tools and auxiliary stuff. If your tank is good dont get rid of it, reuse it as Matt and Moparmike said.
What about a 2 stage? I haven't looked deep into it, but will when I start looking at compressors