I also want to stay about 85 days but was told the return flight must be less than 60 days
Changing flights is EXPENSIVE these days and I was told by the NY consulate they would not issue an e-visa for 60 days if my return flight was longer than 60 days...
My inclination is to book my 86 day flight and do a visa on arrival allowing one 30 day extension and then doing a trip outside Thailand and do a second 30 day ... What a pain!