dmiller: If that JD 530 is in good condition you will like the job it will do. That baler was the first "real" round baler JD ever built. The 500 and 510 where not good balers.
As for square bale help. It is getting hard to find. One issue is in most farm country there are not many kids on the farm anymore. With the farms getting larger and larger there just are fewer farm kids. Darn few "city" kids ever helped much in hay anyway.
We used to put up 40-50K of hay and straw every year. You could not do it with manual labor anymore around here. There just is not the help. I really looked hard at one of the bale banders/cuber(attaches to the baler and makes a ten bale cube) 10 years ago. The small square market just is not good enough around here any more to justify the cost.