Shoot me a PM with any questions you have. I just started this past July getting everything ordered, built, etc. It doesn't take incredibly long to get tour EIN and other permits or linscen's.
Welcome to R2R. Spend some years in the hobby before viewing reef keeping as a business. There is a steep learning curve when it comes to dealing with livestock and coral. Margins are thin on coral sales / vs cost of the equipment, electricity and the dry goods it takes to grow them. Most people are happy to eventually get to the point where they can pay for some of the aforementioned. Either way, best of luck.