Keeping My Options Open

I've been researching a career as a Personal Trainer and received an article on the 10 Steps to Become A Personal Trainer from my sister.  My brief research found that I should become ACE and AFAA certified which could take 3 to 6 months and requires me to pass several tests.  Man, after I became PMP certified, I thought I was done with taking tests.  Well, my plan is to get the ACE/AFAA certifications and train part-time or full-time depending on the path my career takes.