Urgent help and advice needed (Deltona, FL)

Wow, you got you foot in the door.  My place is zoned agricultural , so i don't have personal experience.  Here is one link to start:

http://www.dummies.com/how-to/content/how-to-change-chickenraising-regulations.html

Here are a few more links:

http://backyardfarming.blogspot.com/2010/04/tips-from-successful-chicken-ordinance.html

http://www.chickencoopsource.com/chicken-coops/ordinancesforbackyardchickensarticle.cfm

http://66.147.242.185/~urbanch5/wp-content/uploads/2012/02/Ordinance-research-paper.pdf

My suggestion would be to treat it like a Job interview.  Dress nice and groom well to break any preconceived notions of what a man who wants chickens in his yard looks like.  Don't strictly rely on the Internet or a computer for your presentation.  Have a handout in a nice plastic report covers that they can keep.  Have more copies than you think you will need.  If you are meeting with three people, bring 6 nicely bound reports. Ask their opinions and have some examples of surrounding cities that successfully allow chickens and how they have placed limits on the practice.  Suggest reasonable limits and point out that roosters aren't necessary at all. Also include some good pictures of small chicken tractors to show that things will be nice, clean and presentable. 

Every reasonable person has three real concerns. 

1) Being woken up at 4 am by your neighbors rooster.  You may Suggest a ban on roosters. 

2) The chicken version of the the crazy cat lady. No one wants a neighbor who has 500 chickens living in his garage.  

3) The gateway drug syndrome.  Everyone knows that people push for more and more.  There is the worry that if they back down and allow chickens, people will start having goats on the front porch. 
 

When the average person thinks of chickens in the city they visualize the ghetto with chickens and goats on the porch.  Bring examples that break that notion.  Every picture you bring has to represent a clean low profile chicken keeping. 

Just my 2 cents

Oh, also include a contact person and phone number in the example cities zoning department for them to talk to.  Talk to this referance first.  Its a good idea to call this person and explain what you intend to do and also ask his thought on chickens.  The last thing you need is to give out a phone number only to have your referance say that allowing chickens was the worst mistake in his city has ever made.    Its a rule lawyers have.  Never ask a question in cort unless you absolutely know what the guy is going to say. 
 

rikithemonk has great advice.  There are wonderful photos of attractive coops in the coop section on BYC that you could include.  

I think coming prepared with some info is a good idea.  But certainly asking questions and listening is helpful.  Because you have done a lot of reading you may be able to anticipate many of their concerns.  

Maybe using a town that is a similar size or has regular size lots as an example would be best.  Madison, Wisconsin is a modestly sized college town and Naperville, IL is the largest suburb of Chicago http://www.backyardchickens.com/a/naperville-illinois-chicken-ordinance

I just read those rules.  Wow, those seem to me to be really nit picky and restrictive.  Right down to telling you how to store your feed. 

ii. Neither the coop nor run, nor any part thereof, shall be located between the rear of the principal structure and the front yard lot line.

I had to reread that four times before I understood what it was saying.  No coops on the side of the house.