What documents do I need to submit for a DTV visa in Thailand as a freelancer?

Hey folks, I would like to get a second opinion on whether or not I'll be submitting enough documents for a DTV visa as a freelancer. My main concern is that I have only just recently become a freelancer and only have a few contracts at this moment, all of which are somewhat small, and many are from the same company. I do not have my own business anywhere. Here is what I am planning to submit for my application in Hanoi:

* Cover letter outlining intentions and my work situation along with a list of docs

* Passport and recent photo

* Six months of back statements demonstrating savings over THB 500,000 throughout

* I live in Vietnam right now and so evidence of current residency: existing visa, most recent entry stamp, current lease agreement

* Letter from my friend in Chiang Mai who I will list as my address in Thailand before I am able to find something longer term once there

* Proof of freelance work: a copy of my Linkedin profile, a copy of my website advertising my services, recent consultancy agreements, an NDA from another client. I also have access to one of my clients' business registration documents in the UK.

Is this enough? Should I plan to submit anything else, say for example a tax return from when I was employed full time? TIA for any guidance.