I came to Thailand 1 month ago and I also used Jetpets(great choice). Definitely recommend using an agent. I also used Relo4paws in Bangkok who I also recommend., as the receiving agent.
I applied for 90 day non O visa and was issued a visa based on Marriage. But I am hopeful that I will be able to change it to a Retirement, but it is no issue if I am not allowed to in the first year.
Thats not a problem. It only becomes a problem when the total number of days add up to over 180 days in total in a calendar year, then you become a tax resident of Thailand and you lose your tax resident status in Aust.