I'm not sure what you mean by "network system admin land developer". If you mean that you are a network administrator or system admin then all the good jobs are going to be along the Wasatch Front (SLC, Provo, Ogden, Murry, etc.). A friend of mine is a network admin who works in south Salt Lake and he lives in Lehi. From what I hear there are lots of homes going up in Lehi right now. On the other hand, if you are a "land developer" then it probably doesn't matter what part of the state or what city you are in because there is a lot of land development going on throughout the state. As a native Utahn I've seen a lot of people move here and some of them go through a little culture shock, so just be aware of that. This is a great state to live in but just be prepared for a rather noticeable cultural change from Florida. This is a very conservative state with a very conservative mindset, which is great for gun ownership. Although there are a lot of liberals and enviros who want to move here for the scenery.
ETA: land prices are going up rather quickly in many parts of the state. It was pretty cheap here five years ago, but things are starting to get more expensive as more and more people move to the state. If Florida land prices are anything like California's then you'll do just fine. Many people move here from California and buy a new home with cash because land values are so rediculous in California. That in turn drives prices up here because there is a lot of demand now. If you own a home in Florida you'll probably be just fine.