Ah, that's a lot clearer now! In any case, quite a few posters have already beaten me to it: keep flying for fun over here and then do your license and ratings once in the US. I would start learning the theory while still here, so you can hit the ground running once across the pond and get the theory exams out of the way asap.
Don't go down the conversion route, this is a house of cards. Once you arrive, just do a standalone FAA PPL, then the IR, CPL and if you feel so inclined, ME.
You don't need the ATPL for instructing, but if you feel like doing it - in the US nobody stops you. You just need the requisite hours. Luckily, they don't have a CAA or EASA
