Try to get your visa as close to the time you leave for Thailand. Issue date. 6 months after that you will see enter befor date. Do your 60 day bounces and time the last one to exit and return before the enter before date then go to immigration and extend 30 days. You will get almost 9 months. As soon as you stamp into Thailand that visa activates.
You get 9 months out of that visa. Exit every 60 days just before enter before date exit and reenter and extend that. 2x Land crossing is visa exempt entry only.