Carlos,
I can't speak to FLorida law specifically as I am not licensed there, but what I can tell you generally relates to Trusts and Corporate Law. LLCs and Land Trusts are excellent avenues to limit you and your companys liabilities, however neither of them provide complete protections to removing those assets from the grasps of courts or creditors in situations where they may be attached--meaning that even with the limits of liability that legal structures may provide you, how you us the properties and attach their ownership in relation to your business activities, can still make them accessible in certain situations.
I would offer that the best thing you can do is speak with a legal professional about the intricacies of your business plans, family plans, and wealth strategies. Identifying exactly the type of asset protections you are hoping to achieve will help them answer your questions. Some of the protections you may be interested in can vary between you as the individual, to those that relate to your heirs or loved ones. For example, as you may know, some provisions of a Trust can protect the Trust's Beneficiaries from creditors, while an LLC may not necessarily be able to accomplish similar functions. An LLC can provide you with limits of personal liability to corporate actions, while still enabling you to maintain leveraging or partnership options on the property; options that may not be available to us in a Trust if you are hoping to continue using the land for business purposes.
Hopefully this gives you some things to consider, and in the mean time while you wait to speak with your attorney about your options, you might consider reading "Understanding Property Law" by John Sprankling. The "Understanding" series covers a wide breadth of legal subjects that are excellent introductions to more comprehensive aspects of the the law that most people have limited understandings of. At the very least it may help tie together some of your questions to relevant case law in your jurisdiction and better facilitate future discussions on the matter.
Cheers.