Additional highlights include RV parking and a wealth of upgrades throughout the home, making it move-in ready.

Quote from @Charlotte Wilson: Maybe I am overthinking this but when I look at properties to purchase that I plan to rent out, how do I make sure I am including all the potential additional “cost” besides the mortgage and property taxes?

Too risky for us.Regarding additional guest packages, you can easily change your tax situation by offering what the IRS calls "significant services".

I was drawn to real estate as a way of investing money I have saved up (around $130K with additional funds to leverage out of a 401K if needed), and potentially creating reliable cash flow over the next 10 years. 

They are not experienced real estate investors, they are retired and looking to create additional income. 

Since they are considering renting their properties out, sell them on the concept of getting consistent cashflow from you - without the hassles of being a landlord.You will then need to make sure you can make those monthly payments EVERY month in addition to do remodels.

Additionally, consider reaching out to real estate agents who specialize in investment properties.

Updated the kitchen, bathroom, and pulled permits to expand an additional bathroom/walk in closet.

Naturally, I assumed REI’s "white-glove" service included a strong legal team to handle these situations efficiently.

But possibly do a prom note for an additional 50k after about a year by pulling out equity.