yes, those are good models. and the prices are about right these days. canon and chinon made good cameras then.
but you should make sure there's a return policy. many people selling film equipment can't say with any authority that it's in good shape. thees are antiques -- the meters go off, belts [if there are any] stretch, lubrication never happens. a test roll should be shot and processed within a safe return period. film cameras are still cameras, but with motors -- there's a lot that can go wrong.
how will they watch the results? remember that a projector is necessary to watch film, and that it will affect your judgement of the camera.