You could dump a 10% bleach and 5% lye solution down such a line (the two active ingredients of Drainex) all day long and it would never spring a leak or "make holes in the drain line."

If you provide a washer get the cheapest simplest model.

The simplest answers to all of these questions fell within my network of people I had stitched together over time.

Real Estate Capital StackI am often amazed at how many time I use the term “Capital Stack” only to have someone stop me and ask me to explain what I mean, so I thought I would take a few minutes to explain why this is important in analysis of real estate investments.In its’ simplest form, the "Capital Stack" is the definition of one’s place in an investment.

What I learned early on is that the simplest approach to most things in life (known by most as "KISS" - Keep It Simple Stupid") including real estate investing, is the best approach.

The network will be the most important ingredient to the equation though. 

The other 2 ingredients are great photos and a competitive price.

Even with a high-level of trust, I would get a full appraisal and inspections.I think the simplest structure might look like this.  

2) Maintenance: almost impossible for a PMC to stay in business and not charge for their time to handle anything but the simplest maintenance issues.

I suppose the simplest way would be to create a new LLC with you and your wife as shareholders and put the STR in that entity.