Sounds like you're getting a great tractor!
I will heartily endorse what others said about changing the fluids. Even though\ the dealer will have allegedly changed the oil, hydro and gear case, I'd strongly recomend examining them while you're changing the front end, and anyt other fluids - like the injector pump sump, for instance. Then, having assured yourself that all fluids are starting out fresh and first rate, you can run the tractor for a few h ours with some confidence.
I suggest only running the break-in fluids for the first five hours and then draining them and replacing. Yeah, it's going to cost a hundred bucks or more, but it is the cheapest insurance money can buy. In manufacturing they try to get the core sand and shavings out, but they never fully succeed, so you want to run it long enough to get them collected and then drained and tossed.
I sa an article on a gigantic ship engine once, something on the order of half a million brake horsepower with pistons the size of Volkswagens or something equally huge. I recall the author saying that the first oil change netted over ten kilos of shavings and core sand. Ever since seeing that, I'venever run break-in oil for more than two hours before draining, and my engines all last much longer than their design lives.
Rich