I live off-grid, so I did a lot of study on this topic. All used coffee grounds make good fertilizer.
Drip machines seem to use a lot of energy, and they seem to use it for a lot of time. They also use disposable filters. Drip machines are kind of on the off-grid "blacklist".
Percolators waste a lot of energy because they have to keep the water boiling for a while, but they don't have any waste products. (I bet they also lose more steam.)
Espresso Machines may use more energy per volume because it heats the water hotter and uses a pump. The coffee also must be ground finer, but it's so much more concentrated that it might balance the energy consumption out. (I guess more extensive studies may be necessary.) They also don't have any waste products. Some people choose espresso because of the superior flavor.
French Press uses the least energy (depending on how the water is heated) as you only have to heat the water up once. The coffee is supposed to be a coarse ground, which can also save trace amounts of energy. It has no waste products. If you want to heat the water with electricity, electric teapots (with the heating element actually inside the water) seem to be very efficient and fast. With no waste products and maximum efficiency, French Press is often considered the best way to go.
If you really want to minimize your energy use and increase your sustainability, then you can grind it by hand, but other than that, it's hard to know if pre-ground or home ground is more efficient. If you buy in bulk, that definitely reduces shipping and packaging waste. Overall, your list looks pretty good.
I've started making cold brew coffee, and I love it. I've got a 1-gallon water dispenser that has a large cylindrical strainer in it. You scoop your coffee grounds into the strainer, you fill the dispenser with cold water, and then leave it in the fridge for about 20 hours. It is the easiest coffee to make ever. You can store it in the refrigerator for a week, and it still tastes fresh. If you already have a fridge, this method uses virtually no energy to make the coffee. Of course, it still takes energy to roast, grind, and transport the beans. In my tests, my cold brew tastes better than my french press, but your mileage may vary. The one I'm using is called "Cold Brew On Tap," but there are many other comparable products.