I will be managing and will be paying a real estate agent friend to show the properties for me.

Quote from @Jarret Jarvis: Hey Will, congrats on paying off your property and your successful stock market investments!

Everything from pay per click, to networking (I've found BNI groups to be a great resource), to cold calling.

If you truly are limited on time or can't make investing a priority, you should look for smaller projects as others have recommended.1) General Contractors are available to run your project, but most are too expensive to make ROI work on smaller projects. 2) A great PMC can act as a Project Coordinator for rehabs, but many won't be transparent about the costs, so you know what you are paying for.

Some PMC's will charge a lower percentage fee, but will charge it whether tenant paying or not.

Long Term non-paying Tenants.

I already released him from the lease as he was near the end of it anyway but I get the sense that he wants me to pay him back for the time he was there and/or his medical bills.The other thing is he left behind some belongings behind.

If you have a buyer's agent, you should have already signed a buyer's representation agreement and that fee/commission is disclosed in that document so you should very well know what that charge will be.If you were the seller and going to owner finance the property, what would you want to see from the buyer that tells you that they will be able to pay the mortgage moving forward. 

Personally I wouldn't feel comfortable trying to wholesale a relatives $1M home knowing that I am breaking the law if I cross over into doing anything that can be considered representing them in the transaction, and knowing it will only be marketed to people who buy properties wholesale (typically investors who don't want to pay retail prices), instead of the majority of retail buyers active in the market who are typcially willing to pay more. 

Our current mortgage terms include a late fee after 5 days, so they’re already paying extra each month and have to split the total monthly payment up between 2-3 payments when they get their pay check.