:welcome:
I added a Ruegg 3 point to my X485. They don't come with instructions but there are posts online about installing the Ruegg. That along with the factory 3pt hitch instructions it's not bad if you have the tools. Wrenches, circlip pliers. Limited Cat1 is same price as Cat0. Might as well get the Cat1. Figure out what implements you will use before spending the cash.
700 hours seems to be the universal "Xseries dash electrical issues so we will pull a number out of where the sun don't shine that folks might believe". Change all fluids and filters, grease it up, replace whatever is broken and enjoy. Don't forget to service the deck gearbox fluid and grease fittings. The X485 I picked up would reset the hour meter to 0 and both coolant temp and fuel meter would peg to the right when the PTO was engaged. Seller came down on price because of that. The older electrical connections are not sealed. I have cleaned a couple of connectors in the wire harness under the dash. Hour meter now stays working but the gauges still mess up. I have more electric harness cleaning in the future. The connectors are not the easiest to separate. I'm torn between adding dielectric grease once cleaned or leaving them dry. Dielectric grease will attract more dirt but will keep the connections from corroding where they make contact so I probably will. Some web searches have suggested adding a better or dedicated ground wire will help the dash. There are some posts about broken solder joints on the internal dash electrical board. I haven't looked too deep in the wire schematic or board yet to sort it all out. It's on the to do list.