@Rob ******
, that is exactly the reason I said get a 6 month METV from a thai consulate in YOUR country before you wing your way here.
That way you have time to look for a business, etc, and are not pressed for a visa right after you get here.
Once you're here you can look into getting first a Non-O visa based on marriage, then a yearly extension of stay based on marriage to a thai which will let you hold a work permit and work if you want to, BUT for right now, just get the 6 month METV to get you as much time as you can once you're here so you can get your ducks in a row and work on your long term plans