Just because Hamilton’s motives may have been selfish, doesn’t mean he didn’t strive for the betterment of the American nation. It is possible that his financial plan put both the country first, and Hamilton's political legacy.
Hamilton wanted to achieve fame and greatness through the establishment of a modern American state. He saw his own reputation intrinsically linked to the rise of the American nation. If he could successfully build a powerful and prosperous economy, he would be hailed as the architect of a nation and secure the reputation as an economic mastermind. 
As such, the argument that Hamilton's financial plan was an exercise in self-promotion and that he was a political chameleon does not refute the notion that Hamilton's financial plan put the country first. In reality, it supports it. Hamilton had to put the country first in order to build his own legacy; the two are inseparable. In this light, Hamilton's plan put both the country and his own career first.