Yeah I had a peach tree for 6 years and and for 5 of them, they would blossom and then we'd get a cold snap and the blossoms would all fall off. Got to eat two peaches one year out of those 6 years. It was some unknown variety from walmart(white princess iirc).
I'm going to try Red Haven and later ones like Contender and Reliance which are both recommended for MO. Aside from fresh, I like the ones processed in white grape juice. Don't like them in syrup. USDA complete guide to canning says "11 pounds is needed per canner load of 9 pints" - Half pints would be good for me. I buy the little plastic cups that Dole has and eat one a day when I have them.
I love fresh peaches. We have two peach trees on our new place - a young one that blooms & a very old, gnarled one that looks awful. The old one has been so ‘trimmed up’ with dead branches cut off that it’s mostly a trunk with a couple of big branches. It does bloom & get green leaves in the very top, but it is on my list to take down. The young tree is doing great so there is some hope there.
As for apples & peaches, buying in bulk from an orchard is what we have started doing. Orchard fruit is noticeably more tasty than store bought (of course!) & you can get enough to make canning worthwhile.