I am not familiar with the HIT Pro exam however, AHIMA just anounced 6 new certifications all related to HIT. I have been looking into them and they all have a little different edge to them. You should take a look! Also, if you were willing to go back for a 2 yr program, the RHIT is a great crediential to have as well. I thought the course was fantastic and it dove through everything from IT to clinics. Good Luck!
Andrew