Non-Compete in Florida

I am currently employed as a Manager at a real estate firm. Last year my broker had me sign a non-compete/non-solicitation agreement. At the time I was not an "employee", I was working as a realtor/independent contractor. I did not start the salaried "employee" position until 3 months later. I am now looking at opening my OWN Real Estate firm, but am worried that my current broker will enforce the non-compete agreement if I do so. The agreement states that it will be binding for one year after termination of employment and that I will not compete in ANY geographic that this Real Estate brokerage owns and is directly engaged in business. My question is two fold- 1) Since I signed this prior to being an "employee"- is this enforceable? 2) Since selling real estate is what I do for a living, would restricting me to in ANY geographic area be considered too broad and unenforceable? Thank you in advance for your assistance.