nice one so I book the return ticket for 59 days after the arrival date to play it safe and submit proof of this for the 60 day visa application thankyou
To play it safe I would change the return flight date to show you can leave Thailand after 30 days then 2 days before departure go to immigration to get your months extension for 1900 bart then change your return flight to the day you wish to leave.This is why I always by a changeable ticket.Failing that foolproof way keep your fingers crossed and hope for the best