So if you are still uncertain, could just make a lease with employer and give that employer rights to sublet to the person, thus your lease is with employer and there on hook to you, and they can deal with the person and all that liability. 

I am a Licensed Real Estate Associate Broker in Colorado who has been reading everything I can get my hands on as well as running through scenarios with my employing broker.

Columbus is also home to OSU, which constantly develops real estate, employs lots of jobs, and attracts students from the US and internationally to attend. 

An LLC and IRS Employer Identification Number can be used to open a business bank account. 

Stay away from Chicago unless you are required by your employer to live in Chicago. 

I did see the area on google maps and saw that the roads were not paved.

They sent a very professional slide pitch deck that showed all of their justifications around that specific market, e.g. employment market, housing shortage data, the new developments in the area, the air bnb data, etc. etc.They also stated the numbers were conservative (7 year to reach the target returns) and that likely it will be year 4-5.

It's great that you already have a home and potential ADU too since being self-employed in the arts can also have extra hurdles just getting approved for a loan. 

The tenant toured my place, said is employed (+i googled) , came across to me as very polished  and came to tour the unit with her mom.

.- If still skeptical, ask for personal references from employers, community leaders, or other respected individuals who can vouch for their character and reliability.By using these methods, you can make a more informed decision about renting to this couple, giving them a fair evaluation while also protecting your interests as a landlord.