Thinking about buying a 1998 LeRoi 185CFM twin port air compressor from someone I know. Has very little use and he only used it for blowouts the last 3 seasons. He bought it at an auction with 6xx hrs on it, and now it has low 800's. 4cyl diesel, new battery, very little to no rust, new tires, pintal hitch, and 50' of hose. He's asking 5K firm, so I was wondering if this was a good buy or not? I plan on only using it for blowouts as well.