If I were you, I'd increase tariffs, keep taxes the same or you may well get a coup, and gradually and carefully disband the irregulars and some of the junks, enough to give you a bit of budget surplus to spend on economic development, while very openly publicising the rationale for doing so and earmarking the money for projects that bring specific and tangible benefits to the Greek people. You can't afford to keep such a relatively large military force in the circumstances, and there's no need for one unless you're going to attack someone, which I advise you don't.