You will probably want a cost segregation study done to get bonus depreciation.

This is probably your preferred option.

Compare that to being able to easily compare options and know what you are getting into and being able to see what is going on, even if you are inexperienced.Check all the threads here on Bigger Pockets about turn key companies that were/are scams/ not as promised/disappointments. 

Let me know if you want me to send you some options to look at here in South Florida.

Or master lease and an option. 

Yes, covering appraisal gaps is an option.

Bonus points, document the journey for your kids/grandkids.

It sounds like you're weighing your options pretty carefully.

What is your exit strategy on this deal, wholesaling, buy and hold, rent with option to buy, etc?

Obviously this is an added bonus to the deal.