First, you did make the mistake by filling the suite one day earlier. I am not aware of separate notice. A three day notice is enough. I see no issue posting notice on the front door if you were not let in the house. I normally personally deliver my notice and ask the tenant to sign a copy. As far as income goes, we are not running a subsided business. If the tenant does not have the ability to pay, he needs to move out and seek government help if needed or move to another affordable rental. This is just my opinion.
You should not let them delay for so long to begin with. I normally maintain very good personal relationship with my tenants but I told them up front, business is business, if you don't pay, you move. If them have an eviction on their record, they will be hard to find another place later on.
Texas in general is in favor of landlords but we as landlords have to follow the legal procedures.
Take it easy, this is the way how rental business goes.