Enjoyed your story. Let me add to the previous comments about slowing down on the money drain. Cave/Wreck Diving often requires different types of equipment from normal recreational diving. So if you are thinking you will want to go that direction, you would want to buy the type of equipment that would work for that. The Air Compressor is a huge OH NO, DON'T buy that. Air compressors for breathable scuba air are: 1. Expensive to buy 2. Expensive to maintain 3. Your volume will not justify the expense. The filters on an air compressor for breathable gas must be maintained and replaced every so often based on hours of use or days installed. Do so research on this on the cost of ownership.
For air fills closer to home try your local dive shop. Yes, they have dive shops in Arkansas. Since you don't say where in Arkansas you are visit
www.divesitesinarkansas.com not only does it list information about dive sites in Arkansas, at the bottom of the page he list dive shops.
For air fills you might also talk to your local fire department. They have compressors to fill their SCBA. Ask if they are pumping Grade E air.
Other dive sites in near by states you might want to visit are: Valhalla Missile Silo in Midland TX; Bonne Terre Mine, Bonne Terre MO. There are other dive sites around in Arkansas and nearby states, mines, rock quarries, lakes, rivers, and the odd missle silo. lots of places to practice. You might want to get a 7mm wetsuit so you can dive in other places besides Florida. Welcome to the world of SCUBA, a very addictive sport. Search this site for other divers near you. If you put your city in your profile you may find other local diver saying hello.