I wish I had written down the pump brand I replaced at my last place. At 275 feet deep in iron rich water, I got 20 years out of it. At around 15 years, the well head got hit by lightning. (The head was about 20 feet away from our bedroom, I liked to have jumped 3 feet in the air) When I finally crawled out, I had no water. With fingers crossed, I headed for the box. The breaker reset and I had water.
I recommend using plastic spacers on the well pipe to keep the pipe and wiring away from the casing.
Lastly, don't scrap out any replaced water pressure tanks. A little work and they make a great chiminea (fire pit). After all your hard work, sit around the chiminea with a couple of beverages and congratulate yourself on a job well done, lol!