Besides my local REIA, who else could i contact for info on finding qualifying applicants i can offer rent-to-own options to?

., your son, or spouse-if applicable), the LLC can obtain a non-recourse loan. 

Banks for lending purposes figure in 5% cost for loss of income yearly on rental properties. at least that's what mine had as average factored in on loan application.. didn't matter that I had had 100% occupancy with no income loss for 3 years on that property the bank still factored it in . 

Then, must wait while remarketing the home, go through the application process, and hope this person pays on time and takes care of the home.

I have a tuned lease package for individuals, but I don't know how much of it will apply in this situation.The interested business is most likely going to use the property for work visa immigrants to work in a nearby resort, probably from eastern European countries, but this is just a somewhat-wild/somewhat-educated guess based on local activity.

For example: "All payments received shall be first applied to outstanding late fees and charges in any order as determined by landlord prior to the application of such payment to rent." or something like that. 

The lease option isn't for everyone and won't be applicable on every property for every property owner or tenant. 

She is a 50 or so years old who would afford a 100% or the rent , she has indicated in her application that her daughter (30ish) and granddaughter (11) will be living with her, they are under the occupant section of the application.This lady has a clean record, good credit score and stable job with the county public school system. 

It's older, but still applicable https://www.amazon.com/Housewise-Womans-Buying-Renovating-Estate/dp/0060971649/ref=sr_1_1?

Fortunately, I have a wealth account at my bank, told them the story, and they told me to submit the loan application to them, and they'll refi'd me, or give me a new mortgage without all this fuss.