I want to make sure that I comply with the Dodd Frank and the Safe Act laws.

If bandit signs are something you are going to pursue, I would suggest learning the laws/rules of the city you will be targeting and either comply with them or be willing to face whatever the consequences are if you don't.

Most real estate lawyers will not do lease-purchases at all, since failure to comply with even the smallest requirement may trigger significant liability for the attorney preparing and filing the various disclosures and documents."

I was a REO Listing Broker for 10 years, I have seen this situation, and generally it happens because the buyer does not comply with the contract. 

They will make sure that you are complying with all the notice requirements and their fee is charged to the debtor.

Maybe this tenant will think to read the agreement and comply...I say keep the deposit for the sake of our fellow Landlords.

Don't they still have to comply with the FHA guidelines which prevent this loan from happening?

He could comply but that is a hope not a plan.  

There are a host of securities laws and regulations you must comply with or you'll find yourself in a lot of trouble.

You also want to make certain that you comply with the mandatory servicer regulations for lenders...which you will be deemed to be if you offer seller financing...