The other thing to note is that the IRS only lets you have a 401K loan balance of up to $50K over a 365 day period. 

I have three listings, 1. unit with a pool and hot tub, 2. unit with a hot tub, 3. both units together as a 12 sleeper.Gross monthly income (after booking channel fees) for the first unit over a 7 month period was $7309.Gross monthly income for both units over a 14 month period is $11,297 (after booking channel fees) As a long term rental the combined rent would be in the region of $5500.Is it possible to sell the property based on the income generated by the STR business or would the value always be based on bricks and mortar comps? 

You absolutely want to be concerned with this.I would just argue what you're concerning yourself with today may be totally different in that 10-20 year period.

You will want to consult with a lawyer.In regards to your last two questions here's some background on what makes a contract valid and enforceable:Offer: A promise to do or not do something within a certain time period Acceptance: A clear and direct statement that all terms and responsibilities are accepted Consideration: A legal and adequate inducement given in exchange for the promise Capacity: The parties to the contract must have the legal capacity and competency to contract Awareness: A party must be aware of the contract Legality: The contract must be legal in the jurisdiction it will be operating in***Not legal advice*** Steps I would take: -Review contract in detail to understand each counterparties responsibilities (if you are not aware)- Email a copy of the lease to each of the tenants listed on the lease and reiterate lease expectations for termination notice, rent payment etc. - If the lease was signed via Docusign (other esign may have same ability) - you can go to the envelope, go to history and view the IP addresses for each action taken.

@Arun Philipnot sure if i understand your question.if you don't have any cash, period, you shouldn't be buying any more properties. 

It’s good to budget for unforeseen expenses.Regarding PMI, it’s worth discussing directly with your loan servicer since many lenders require holding the property for a period or reaching specific equity thresholds before removal.If market rents are $2,200–$2,500, hiring a property manager could help you optimize rent while taking the burden of tenant screening off your plate.

I guarantee it won't catch anything.

We also have shorter seasoning periods than most for cash out.  

Oklahoma adverse possession law   If the neighbor has notoriously occupied it for a period years, in your state 15 years, he has legal claim to it.

Quote from @Max Ferguson: Quote from @Jay Hinrichs: Quote from @Max Ferguson: I'd be interested in hearing about it, but I can almost guarantee if you aren't extremely well versed in the local market you will not find an end buyer.