Nick, as a restaurant owner, one of your most important responsibilities will be locating vendors and establishing relationships with those vendors. Wholesale food is a massive business. Just about everywhere you go in the U.S., you will find a considerable number of companies delivering food. It's just a matter of tracking down the companies in your particular area. You'll most likely have at least one of the national distributors (sysco, us foods, dawn, etc.) but you'll probably want to find regional companies as well. You can't run a restaurant without these relationships.
And the sooner you find these companies and start developing the relationships, the better. How do you find these companies? Here's some methods that might prove to be fruitful.
1. Yellowpages/Superpages (look under food wholesale)
2. Call bakeries and see who they're sourcing their ingredients from.
3. Look for food trucks making deliveries- these trucks are making deliveries all the time, and will have their phone number on the side.
4. Call flour reps and ask them which distributors sell their product in your area
Spring King is put out by Progressive Baker/Cargill. According to their website, they don't distribute to the southeast. Full Strength is just as good, though, and is put out General Mills. Here is the contact information for their North Florida sales rep:http://www.professionalbakingsolutions.com/find-sales-representative
Make sure they know that you're looking for bleached bromated full strength. Also, talk to him about either obtaining a sample or helping you track down a distributor that sells in small quantities. This kind of business to business liaising is what these reps do.
There's also a restaurant depot in Jacksonville
3389 Powers Avenue Jacksonville, FL 32207
To join RD, you'll need either a tax id or know someone who has a tax id (it can be an id for any type of business). Getting a federal tax id is pretty easy, and, as far as I can tell, free. Since you're going to need one for your business anyway, you might as well get one.
MY local RD has full strength, but inventory varies from location to location.
Oh, and, nice pizza
I can see a solid improvement.