Fruit tree questions!

Fruit tree questions!

Ok, so, I was originally looking to get a couple of apple trees. And now I've gotten a little carried away and am thinking about ordering 3 apple trees, one self polinating cherry, one self pollinating peach, and two beach plums. And, three different grape plants that I'm going to put on the fence. I live at the upper edge of zone 6, at some decent elevation which puts my little peice of the world at zone 5. It is notably colder up here than the surrounding area, reliably, year round. It's also a fairly wet area and has pretty good soil quality. My question is the beach plums. I LOVE them. I remember picking them as a kid and making jam, and would love to have them in my yard. But, I wonder if my soil quality is too good.... so, my question is this: should I just add sand to the soil where I plant the plums? Also, has anyone played with planting apple trees in the same large hole? I read about it as a solution for small spaces. My yard isn't small, but I don't necessarily want to take the whole thing up with evenly spaced fruit trees. And, when I'm planting the fruit trees, is there anything I should consider about spacing them from each other? peach from apple, apple from cherry, and the plums... can I plant the plums in the same large hole together? Or the peach and cherry? And, has anyone used commercially available branch spacers? are they worthwhile, or can i just do the same thing with peices of scrap wood? Is there anything else I should be thinking about when planting them? Thanks in advance for your help! :)
These guys make the whole block green with envy.

These guys make the whole block green with envy.

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Unidentified Plants (Again)

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Cactus ID

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New loveseat…

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My room is very cluttered and messy

myroom

myroom