Thanks for the replies. I think I am leaning towards getting a visa in Savannakhet. Asked several agents and as Stuart mentioned, all offers were pretty hefty. Will have my ED cancelled before the trip. Thanks!
I am at the airport in Yangon waiting for the flight back to Bangkok after getting a SETV today and I have to say it was a breeze. Didn't even need the onward ticket. Just sharing my experience. 😊