How I have it set up currently is the owners (my clients) are receiving Airbnb payouts and I send an invoice at the end of the month for my Mgmt fee.

The property owner defaulted on the property and owed back taxes and HOA fees ...

When taking applications, should I charge a fee to cover background, credit, and employment checks? 

What matters is how much you can charge per night and what your occupancy rates and costs would be.

Im looking to move our 5 (soon to be 17) short term rentals over from being solely listed on airbnb, to a comprehensive PMS system to save on airbnb fees and build some efficiencies into our workflow.

If it's not assumable per the documents ask him to reach out to the seller (now his lender) to see if they'd consider letting you assume the mortgage.

To cut to the chase - the real value of the course is the private Facebook Group and the 2X per week coaching calls with Palak and Niti.

Also how do you set up contracts that are in your favor, such as being able to get referral fees that are more your in your favor?

A hypothetical $150/mo fee to manage a 2k/mo home is tolerable, but a 150 fee to manage a 750/mo house hurts.Just make sure you factor in all of your expenses into your equation and don't just calculate your cashflow as being how much money you have after paying the mortgage.

These buildings typically have 3 floors with 2 units per floor.