I am just starting this process as well and I am going to just start taking the test beginning with what I think will be easiest for me to get my feet wet. After I get a few passes under my belt I will apply to TESC and Excelsior to see which one will allow me to complete my degree the quickest. I recommend that you just pick a test, study and just do it. After you get started you won't be able to stop. I am taking my first test next week and I am very excited, hopefully the weather will cooperate with me next week!

Good Luck!
Kelley