Anne - the extension office is a good idea, I may need to just go to that home in orchard class they are offering.
James - thank you for your experience. I am also not trying for artistic beauty as much as compact and trees that are easier to protect from cold/birds/bugs with tarps and nets. (Though if the deer ever break in, they would have a feast.) I may just go with standard trees and sharpen my pruners.
I had seen a few places that dwarf was suggested, but I believe it was this podcast where an academic guy (from the cold northland's, not really our situation) really emphasized dwarf stock for espalier applications.
https://podcasts.google.com/feed/aHR0cHM6Ly9mZWVkcy50cmFuc2lzdG9yLmZtL3VyYmFuLWZvcmVzdHJ5LXJhZGlv/episode/MDk5M2NmNmItOGM3My00YzdmLWE0ODMtM2YwN2YyYWQ4YjUy?ep=14
It was a good listen because he had other interesting tree/apple management tips.
Thank you all!