Used to be on METV a number of times pre-Covid. It's been over 2 years since I've stepped foot in Thailand.
Any issues doing just the 1st two airport entries but not doing the 3rd? Not particularly keen on doing land border crossings. Prefer to just fly out, do a few days in a neighbouring country then fly back in.
1. 45 days + 30 days extension (mid October), then fly to another Asian country for a few days and fly back
2. 45 days + 30 days extension, then fly back home.
I guess if the above is an issue then I might as well apply for a METV here in Australia, as I've done in the pre-Covid era.
45 days entry, 30 day extensions, as I've mentioned in the OP.