FloridaKid, that was very funny. :-)
Seriously, begin with an explanation of what circumstances make your appeal unique. What new information are you sending them? Carefully describe any extenuating circumstances that make your appeal particularly compelling.
It is okay to say that UF is your first choice school, and that if they reconsider and admit you, you will 100% promise to attend, but do not carry on about how much time you have dedicated to this -- you are right, it would be excessive.
This is about your qualifications for admission. Be sincere, be concise, be specific. Talk to your guidance counselor before you complete the appeal -- they are great sources of advice.