Definitely hire a real estate attorney to draft or review any seller financing agreement to protect your interests.Ask the real estate attorney how to handle the POA situation...can you talk with any of the other property owners who are short term renting out their properties to see what/if they have any issues? 

I know there is a new tenant protection law but the waiting time is extremely unfair to landlord.

I also do flips when it is the right time to do so.I also manage a significant rental portfolio for our customers.

The problem is that there constantly seems to be fees being charged to me an example of this is in the contract  there is an additional 100 dollars allocated to sewer and water that the tenant automatically pays every month with rent and anything outside of it should be billed to the customer (there is no specificed time when this will occur on the contract) but it appears to be billed to me and after speaking to IIP it's like they made up rule on the spot stating that after 6 months all of the additional utility fees would be billed to the customer and in the meantime I am being charged for it.

However, as of the date of notification, it was evident that a pref equity raise was to protect the GP and their source of income, not the equity of the LPs.

For one, they typically will not lower the contract price, they need to protect their comps, so the credit has to be used for closing costs, rate buy downs and "upgrades."

Cash flow is protected rents.

The only benefit you'd get from a fideicomiso is asset protection so you have to decide if it's worth the cost.

I can say in our case, it ticked me off tossing money away after getting information that was a one-size-fits-all that did not work as intended in my market, scripted coaching that again did not work for what we were looking to do and finally after getting a kiss off from the customer service group when I voiced my experience, I knew that we had wasted a good deal of money. 

I always try to use NNN when possible since it provides the most financial advantages for the owner and protects them from fluctuations in taxes and property insurance (which is a huge protection here in Texas).