Indecisive

Looking at the ARDMS licenses now I am confused. I want to get the ARDMS and be able to work in any specialty, but I see that for vascular there is a totally different license required. The job I would be getting for sure is requiring Vascular so I might just take the vascular exam and be certified for VRT and than before five years I must apply for the official ARDMS that way I can get abdomen and OB/GYN. AHH going nuts!