Conquer Ceylon and stop dicking around.
Speaking of this, a successful campaign of Danture would have lead to an early Portuguese subjugation of the Kingdom of Kandy, the only native power that was always able to resist European domination (until the British finally got them in the 19th century). The Kandians were instrumental is expelling the Portuguese of the island and enabling the Dutch takeover. So getting rid of them would obviously be a massive plus.