For a turnkey property, in an "A" neighborhood, a reasonable cash-on-cash return might range between 5-8%, since these areas tend to be more stable but with lower returns.

You could also potentially pay yourself a salary through the company, which could create retirement plan opportunities, such as contributing to a solo 401(k) or SEP IRA.

In general, make sure you ALWAYS verify stable employment AND income.

I had to figure that out myself as well a couple of years ago haha as already mentioned, first things first, make sure you feel financially stable and secure. 

I would only suggest a property management company set up if you are not working for an employer and are interested in retirement account contributions + deducting health insurance costs.If you are already working for an employer who is providing a retirment account plan + subsidizing health insurance costs, in my opinion, no point in setting it up.

Inspectors can be lazy louts who are just working toward retirement or they can be so picky they fail rentals for the smallest of issues, including dirty drip pans on the stoves and mildew around the tub. 

If you are identifying individual private money lenders, you can consider having a conversation with them about using their IRA, previous employer 401ks, or other retirement accounts.

How stable have your bookings been over the year? 

But with sub to you need to be very well capitalized in-case the loans gets called or something else happens with it and you need to retire it.

I used my Self-Directed Retirement Accounts to loan on several sheriff sale auction properties in the past.