Also i'm looking at UPS requirements and AMF seems like it would be a good precursor if you wanted to go to UPS.

Basic Qualifications
Hold a current unrestricted ATP certificate with an Airplane category multi-engine class rating and English proficiency endorsement
Hold a current FAA First Class Medical Certificate
Hold an FCC Restricted Radiotelephone Operator Permit
Hold a valid passport
Have authorization to work in the United States
Have a minimum of 1500 hours of total fixed-wing pilot time

Preferred Qualifications:
Bachelor's degree or higher from an accredited college or university
Recent and type of experience will be considered; for example, preference given to candidates with demonstrated flight experience in transport category aircraft
within the last 12 months from date of application
Minimum of 1000 hours Pilot in Command (PIC) hours in fixed-wing jet and/or fixed-wing multi-engine turboprop

Would I be mistaken assuming that it would be possible to go from AMF straight to UPS after a few years?