I have a 9000# Atlas that I bought from a widow several years ago. The heaviest thing I lift is my 14 Ram crew cab truck. It works great but I have one complaint. I'm 5' 10" tall and it doesn't raise my Dart high enough for me to stand straight up under it. If the car didn't sit low I could use the risers and lift it high enough.
So in addition to the good advice already given I'd make sure that the lift arms go high enough to walk under them. This way yo will be able to stand straight up under anything you put on it.
