Some notes on your proposed layout. The blue spruce location that you show is only 9' +/- from the trunk to the bar stools. In time, a blue spruce, unless it is a vary narrow cultivar, will take over that space with ease, leaving no space to even walk by. I'd recommend drawing trees in their mature size to get the correct perspective. Is your equipment pad the rectangle behind the shed? That's one option, though it's a long run from your electrical source. What is your heating fuel? Electric or gas? If it's gas, that's a long, expensive run.
Bigger picture, if you plan to remove the Sunburst Honeylocust, you may consider pivoting the pool so that the bottom right corner moves over to the change of direction in the fence on the right while keeping the same offset from the fence, albeit now on the opposite side of the pool. This does several things. One is that I believe it keeps your pool in the sun longer in the later afternoon. I know that much of our swimming is late afternoon and it sure feels nice to have sun on you (keeping in mind your northern location - not Texas). Even in Maryland, I find myself wanting sun more often than shade while I'm in the pool. Not to mention more sun on pool equals less money heating it. That is, if in fact that move in fact improves your sun angle (I think it does). A second thing it does is kind of esoteric. When viewed from your house looking at the end of the pool makes it look smaller. If the pool is angled, it will look larger and seem like you are seeing more of it. I would also at least draw it up (and maybe even a third way if possible) just to see if something strikes your fancy that you didn't first expect.
Hopefully this works. I've had to use imgur because don't know how to delete the images that i've uploaded - so i cant add images directly. Sorry for the inconvience ( any tips on how to to delete the uploaded images so i can add others would be appreciated).
I've posted two designs -let me know what you think. All help and ideas are welcome.
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Imgur: The most awesome images on the Internet