Non-O & one-year extension (retirement)

54 yo Aussie male

Monthly income > bt 65000

I'll enter Thailand on a 30 day visa exemption & convert to a single Non-O visa (bt 2000) at Chaengwattana Immigration in Bangkok

Then apply for a one-year extension of stay for the reason of retirement from Jomtien (bt 1900)

Visa exemption to Non-O visa conversion:

1. Can I expedite this on the same day that I arrive in Bangkok?

2. What documents will I need for this conversion.

3. Will all these documents need to be in Thai?

Non-O Visa extension:

1. Is it only the Australian embassy in Bangkok that can issue (for Aussies) the proof of monthly income document?

'bring details of your income over a 3 month period, e.g. bank statements etc., to your associated embassy and receiving a notarized letter that states your monthly income to present to Thai immigration.'

2. Does this document need to in Thai?

3. Will I need to furnish proof of my Thai residential address?

4. Apart from a passport photo, what other documents / forms will I need to supply?

5. When leaving Thailand, will I need a re-entry permit? What is the cost & are they available form Jomtien Immigration?

Are any of the ex-pat visa services worth considering?

Key visa have stated they can expedite my Non-O visa extension, but for a hefty aud$1200 tariff.

I understand that this service will alleviate a great deal of stress & wasted time, but $1200 ain't peanuts...

All constructive advice appreciated