What documentation do I need for my O/A Visa extension in Thailand?

Hi could somebody please confirm that the below list is full and correct for me to apply for my 1st extension of my O/A Visa,

I went to Chaeng Watthana complex yesterday to ask for a list of requirements and she handed 5 papers, I only see once home there is still no solid list of required documentation to bring along to apply for the extension just one paper given information, I was also surprised by the extra forms, simple to fill out though but could delay you if you have an appointment booked and then given extra forms at the last minute,

So I’m trying to put together my own list to save wasted journeys to immigration,

1. Completed TM7 form with photo attached, plus 1 x spare Photo

2. Completed and signed: The Acknowledgement of penalties form

3. Completed and signed STM.2

4. Health Insurance starting the day I applying for the extension

5. Bank statement to show last two months of mutual 800,000 banked funds, (Yearly statement next year)

6. Management signed bank letter to confirm it’s my bank

7. Passport

8. Passport photo copy of information and visa page, or should it be : (ever page in my passport ? )

Can the Bank litter and statements be done at any of the Kasikorn branches or does it need to be done at the bank I opened my account? Pattaya I’m now in Bangkok

I also had a form handed to me that is titled: Statement not sure what this is for and how to fill it out ?

Am I missing anything?

Also the day I will go to immigration is the day I should do my 90 day report I’m guessing if my visa is granted I will not need to do this until another 90 days has passed, sounds obvious but just checking,

Thank you for your help always,