Marco, welcome. I did see the picture of your land and thought, perfect place for fruit trees. My first question however is your choice of fruit trees. What your choices say. . . They are all on dwarf rootstock and you do not want to do a lot of pruning and want to keep your orchard manageable. I would forget the dwarf varieties and go to semi-dwarf rootstocks and prune instead. Your variety choices will be far better quality than the fruit designated to dwarf varieties. I think of the dwarf varieties growing in large redwood tubs on patios, you are lucky enough to have land. Mamuangs question regarding spraying, I did not read through all of your responses but I do hope you are prepared,.Out of a total of 18 years of growing fruit trees in Newport, RI, the first three years were blissful. Little fruit, as the trees were just getting started. At one point I had 40 trees. Backed off to 23. The first wake up call came with learning about peach tree borers. They didn’t kill my peaches, but they killed a nectarine and a Bavay green euro plum. When you start to lose trees and not just fruit its time to spray. Hopefully you will learn from this and spray from the beginning. Do not waste your time and save your trees. Also, protection for your trees. I used very strong black plastic mesh bought at home depot in rolls. I cut it into three foot tall pieces, and tied the sides together to form circles with plastic covered twist ties. Large tubes of heavy mesh… A weed eater would not cut through this mesh. Make one for every tree. And buy netting. American Netting company is excellent.
Spray tanks. You will need pesticide, fungicide, copper, your choice of oil (neem?) and a sticker. A heavy duty fungicide is necessary as we are close to the sea. Mamuang can fill you in on all of the latest excellent sprays. And Kaolin (Surround( a natural clay for spraying).
Apples that worked for me, Pristine, Mott Pink, Jonagold (takes two pollinators as it is a triploid). Ananas Reinette, and Calville Blanc d’Hiver. I had 9 apples (these are the standouts).
Plums: Italian Prune Plums, Bavay and three mirabelles. The Mirabelles took a while to catch on and give fruit as did the Prune plum. About 5-7 years.
Peaches: Black Boy, Elberta ( a peach I could count on annually), Early Crawford, my Shui mi Tao, Chinese white peach took time but the few I had were excellent. And Indian Free.
Apricots: Harglow and Tomcot (three total). Produced two apricots in too many years I would not bother.; Our springs are too cold and kill the blossoms and fruit.
One pear tree with five grafted varieties. (Squirrels favorite tree). Pear William, Flemish beauty, seckle, and two others. A Separate Abate Fetel.
Raspberries: Anna, Jewel, Bristol, Red, Kiwi Gold.
Blackberries: Ouachita
Grapes: Concord, and two varieties from U of Arkansas. Hope and and a red table grape (can’t remember the name).
Strawberries. Red Alpine, Mara des Bois, and a few others.
And four large black currants, two red, one white and one pink.
These trees and shrubs took a tremendous amount of work. Pruning, spraying, weeding, more spraying, digging holes. . . The full monty! The the plants and trees mentioned work in your zone. I would take a closer look. And listen to Mamuang who is your neighbor and really knows her stuff! Hope this helps. Oh, and a Montmorency cherry. Huge tree.