We're both protected regardless married, but check with an attorney.   

Ask how many deals your trainer(s) had/have done in YOUR market of operation and ask them to give you specific examples that are a matter of public record.  

How do I protect myself from developers from back-dooring me on this?

That last months rent protects you somewhat in the event they need to break the lease.  

There will not be any new apartments being constructed with rent control and that new law on requiring solar panels in effect.Get the word out and protect investor, home owners, and landlords  https://twitter.com/prop10flawshttps://www.mercurynews.com/2018/08/25/editorial-p...

I say this because the 'Protection' aspect touted by the LLC has never been tested in court (so i've been told by a lawyer).

After switching hands a few times over the years, the house at 2830 Park Street was purchased by the Florida Cabinet using what’s called the Internal Improvement Trust Fund.In 1982 the state Department of Corrections took control of the house and used it for what’s called a Women’s Adjustment Center — a sort of halfway house for female inmates with short sentences.Now, a Department of Environmental Protection spokesman said his agency is in charge of selling it off, along with other excess state properties.

As an agent if you represented a seller and the buyer was a week late and going to be even later (and you are not sure if they will ever actually close because they can just tell you anything without per diem or extra EMD), would you roll over and tell your client "well tough" or would you get them something for the failure of the other side to meet contract or at least a guarantee to protect them?

The IRA is handled and reported in the same fashion, but instead of just focusing on the public exchanges, they can document an IRA investment into shares of privately held stock, crowdfunds, private mortgage notes and the like. 

I always suggest people use a Title Company and get Title Insurance and a Warranty Deed to protect themselves and the future transactions on the property.