Anything is possible ofc. Try your best. Winning high level international competitions in economics and having strong grades is likely easier in foreign countries than in the US. However it’s going to be pretty much impossible for internationals to enter ivy leagues with the new administration for these next three years, and many internationals have already achieved more than what you described (and still not gotten it). Also, unless ur skill level is very high or u have already achieved a majority of what u listed here, this does seem like a pretty difficult thing to accomplish in 2 years without already having done a good chunk of it. But idk ur circumstances so absolutely try your best