You have to listen to your inner voice, run background checks and get recommendations.

Are there credit and background requirements for buying tickets?

Would tenants care that much about sharing a lease and technically an address if all of their living spaces were locked from eachother?

For example, I mention that every adult must pay a $30 application fee, pass my credit/criminal background, make a combined income of 3x the rent, and whether or not the property accepts pets.

I was never involved in the business and don’t have any background in real estate to build on.

I am still exploring ways how my background in inspections could be used toward investing so would appreciate any tips on suggestions of strategies you all think I should use.

Your landlord isn't going to pay any after hours, or weekend repair rates, and so you are most likely going to have to pay for those out of your own pocket, even though it's technically not your responsibility. 

The last rental I posted, I had a woman apply and found out she had stolen someone’s identity when I was working through the background.  

I understand that because the cash flow will be delayed for 1-2 years, I am technically paying such good price for the apartment, therefore I would like to collect more opinions on this type of investment.

I have a background in marketing and am wondering if paid google ads and paid search is required in addition to yellow letters.