FAFSA is just an application. It isn't actually any money. You must fill it out for pell, most other things tell you to as well. I don't know if you can use Pell and MyCAA, but filling out a FAFSA won't cause any problems.
I used both in 09-10. I'm hoping I didn't screw it up and will get in trouble later.
"I believe in pink. I believe that laughing is the best calorie burner. I believe in kissing, kissing a lot. I believe in being strong when everything seems to be going wrong. I believe that happy girls are the prettiest girls. I believe that tomorrow is another day and I believe in miracles." -Audrey Hepburn
As the spouse of a military member, you have options when it comes to paying for your college education. The Military Spouse Career Advancement Accounts, MyCAA, and Dependents’ Educational Assistance program provide government military spouse college funding you don’t have to pay back. As a military spouse, you also have the option of applying for Pell Grants, Stafford loans and private college loans to pay for your college tuition and related expenses.