Thanks to your excellent feedback, I'll do this:
Cut peaches into eighths, drop into aciduated water, no need to dry, but when I take them out of the water I will put them on a towel to mop up excess moisture. Place on silpats and perforated pan, leaving a bit of space in between them. Dehydrate at 105F (fan on) for maybe 3 1/2 hours. Freeze on trays then vac pack.
Questions:
Is cutting them into quarters instead of eighths a bad idea? If okay, does this double the dehydration time? Or even longer?
Do I still need to have the oven door open a crack? Wouldn't that significantly hinder the dehydrating process?
I'm really excited to try this.