Instinct says go to my lawyer, but what do I want to know, what should I insist on, how can I be certain that I remain in control of my properties, and still allow the investor the security they deserve.

If you intend to keep the current tenants, and there is Texas has a standard form of lease, you could insist the Vendor have all tenants on this standard lease as a condition of Close.Alternatively, you handle transferring of the tenants to the standard lease post Close.

I have also learned on this forum that it is easier to raise rents a smaller amount every year as opposed to letting it go a few years and then insisting on a large increase or worse yet, being far below market value.Mediocre at best I suppose, I'm a much better landlord then when I began this journey less than 2 years ago.

I guess it is similar to every primary residence house we've bought, where we have insisted on staying well below what we are qualified for, not the cultural norm.  

The buyer was paying cash, but I insisted that they have an inspection done to make sure that there were no septic problems. 

Let it go.This is another reason we Insist any buyer be preapproved by Our lender, even if they don't use them, since some preapproval s aren't worth the paper they're written on, and apparently the loan officer didn't pull their full credit or they would have seen this day one.

Seller insists house has 2 bedrooms.

Some landlords insist on it, some even provide it.We also have an umbrella policy that would cover us in the event that a claim was above and beyond what the landlord policy (or our own homeowners or our auto policy) covers to protect our personal assets.  

Being pre-approved is something that close-minded people insist on.  

If they insist on off market route, engage a serious number they want in order to sell.Send your commission with the offer to the owner and follow up.