The properties i'm considering are already established rentals, I asked the agent on the listing how long their lease is until because I have family id prefer to rent to.

If not, you have established grounds for charging their security deposit for a driveway repair/replacement.Is the garage large enough to park the trucks? 

Bonus if it can be turned into an educational how-to guide.The resident can either pay out of pocket for any work needing to be done, or they can let the GNA cover it in exchange for direct principal payments off the original market price purchase.Make a simple guide to what needs to be done on a regular basis, and establish a plan for what the resident can handle, vs what the GNA provides.Create synergy with kids and grandkids to accomplish common/ regular tasks.Opportunity for daycare/ day camp, or even homeschool type services.Opportunity for future continued business partners to take over living on the residence.Preferred scenario, resident pays for material and professional labor, and the GNA provides cheaper labor for easy tasks etc.Residents may pay part of the labor cost, but ideally if the GNA has cash to pay internal employees, then those costs get applied as principal payments.Explore options that let GNA employees trade time for ownership of that specific property, instead of traditional pay, or use it as an overtime bonus.Find ways to incorporate local artists and craftsmen, and make unique projects that incorporate the story of the house as told by the resident.

The executor told me they decided to sell to us at that cost because we were the only offer that treated them respectfully.

I wanted to ask how to establish an application process or system for all the interested parties.Do I take hard paper copies of a rental application at the time of showings? 

You could expect to find an older duplex  in a good established neighborhood,  for around $150,000-$200,000.

Does anybody have experience with this company or have recommendations for establishing business lines of credit?

Around here that equates to ~$6k & $12k respectively.

Establish a relationship with a lender to make sure they will fund my typical deal.

But in effect they're the same and yes it's common.Generally the only way to avoid points or an origination fee is 1) going directly to the lender (no broker/intermediary involved), and 2) have an established relationship with the lender. #2 could mean either that it's a HML you've done several successful deals with, who cuts you a break and eliminates the points, or is a private lender who isn't real estate savvy and doesn't even realize points are common.It's basically the same with lending as it is with buying houses: The more work you personally put in to make the deal happen, the better deal you'll get.