My boyfriend is Bulgarian, I am American. We want to get married in Bulgaria, any tips?

I will be moving to Bulgaria sometime next year. As far as I can tell, I can just go over there, without a visa, and get married within the 90 days I am allowed to stay there as an American citizen. I am wondering if anyone in the same situation (American/Bulgarian citizens married IN Bulgaria), know if there are any other requirements. I know we will both have to prove we aren't currently married, our citizenship, etc. Anything else? Also, following the wedding, we plan on living in the country for at least a year before moving back the U.S. and starting the long immigration process/hle. Once I marry my boyfriend, will it be fairly easy for me to get a long-stay visa to stay in Bulgaria for a year? Sadly, I have visited and have seen firsthand how the government can sometimes be corrupt and cause trouble for visitors (although I have to say, I have been to many countries, and going through customs in Sofia was THE EASIEST and most friendly I have ever experienced, even in my OWN country). So, any tips on how I can get everything all in order and give no reason for the BG authorities to give me any grief would be great. Thanks!