Another thing to take into consideration, is the different requirements per county, I know here in California, there are a couple more hoops to jump through to be an EMT in Los Angeles than elsewhere in the state. Also you can't do as much as an EMT in Los Angeles as elsewhere in the state etc. etc.
This is a monumental task you are undertaking, but I look forward to seeing the finished product.
Here are some things I've been researching lately in reference to EMS maybe you could include them all on your site if you wish.
Reciprocity for EMT in different states
Pay scale comparisons for EMS in different states
Cost of living comparisons for Different States
Yeah I'm trying to get out of California...
Best of luck!