If you start on the standard track, there are various crossover points where you can move over to the adult tests without starting all over again from the bottom. If you start on the adult track, once you've passed Gold Moves you switch over to the standard track at Intermediate.
Maybe you should have your coach consult with a coach more conversant with the US Figure Skating test structure? A lot of coaches I have seen (typically those who have immigrated from Europe without a MIF test structure but sometimes those who are moving over from ISI) who are putting out their first US Figure Skating tests understand the diagrams but not the specifics of what the passing standards actually entail. As such, there are a lot of tests that "look like the diagrams" but aren't skated to passing standard and the skaters go through a number of retries as the coach is figuring it all out. This is frustrating for the skater, coach, AND judges and can really give the judges a bad impression of both skater and coach. Just a suggestion.