A portion of the gain will be subject to 25%(depreciation recapture) and 15%(preferential capital gains tax rate).The State will also charge a tax.

Does this affect my ability to fire this property management company when I purchase the homes?

If there are bars, are they capable of being opened from the interior?

That, in a nutshell, is what you are allowing someone to do.You could let them do it for 12 months, learn from them, then convert your other properties into STRs.  6 years ago I got lucky and was able to charge $840/week for a furnished 2 bedroom house that normally brought in $350/month as a LTR. 

What would you charge?

I am a real estate agent and would like to buy a fixer upper to rent in Omaha, but the market here does not seem to allow for the ability to buy a fixer upper in a decent area, and make any money off a flip, or as a rental.

Other than that what should I be asking them either of proof of ability to pay and/or verbal questions.For instance I'm thinking I should ask about their income but how much should I make sure they make or savings on hand? 

Then I was also able to charge and do the entire thing professionally.

Your ability to speak to 'why it's a good investment' will rest largely on your ability to explain the numbers to both parties.

So far I have 1099, Advertising & Marketing, bank charges & Fees, Capital Expenses (for remodels) Car & Truck, Contractor, depreciation, donations, Employee benefits, insurance, interest paid, inventory assets, job supplies, legal &professional services, loans/points, meals & entertainment, office expenses, Rent & lease, repairs & maintenance, salaries & wages, taxes & licenses travel, utilities.