Ask if he will pick up and deliver for service and maintenance at no charge. At least ask what he charges so you are not shocked. My Kubota dealer wanted to charge $300. I did not go orange.
Get the right tires for your uses. Every tire type has strengths/weaknesses.
Have your backhoe work quoted by a contractor. It may not be cost effective to have such an expensive attachment for a 5 acre plot. I have 20 acres and had a local guy do what I needed done in less than a day. A mini-ex or large BH will do an amazing amount of work in a day. Your tractor can handle back filling and grading.
Have your rear tires loaded