Any management fee structure (monthly fees) is simply a guess with regard to what will keep the PMC in the black in relation to the work that will be needed to manage the door. 

.: Maybe someone can educate me on the actual uses and mechanics of using a substitution of collateral clause (aka substitution of security) in a loan when you are the borrower.

These are very different than Subject-To, as the loan actually transfers to your son's name, and off the seller's name. 

.👀 Risk ManagementBoth investments require risk management:Stocks: Company performance, market conditions, economic factorsReal estate: Property maintenance, tenant quality, local market changesBut guess what?

Your actual property taxes alone on that will be over $10K a year in 2025 and don't forget about that supplement tax headed your way.I would suggest keeping the others and maybe changing to LTR if that will give you consistent cash flows.  

Are the students actually doing deals?

•Find out who actually makes decisions—tenant approvals, renewals, evictions.

I guess so, unless the host digs their heels in and demands that Airbnb do the right thing.  

That's actually an excellent idea .... do you know where I can get more info on how to rent out the land for passive income? 

I pull actual credit reports with all of the details.