Cooling down a house in tropical climate

[Exalta-STA]

I've a long term project to implement over the next two years, that is to make my house more ecologically compliant and energy efficient.

I live in a tropical country (Philippines) which has only two seasons (very hot and humid and extremely rainy non-stop for weeks at a time) so temperate climate methods do not work all the time here.

I'm planning to

-repaint the metal roof in white
-repaint the interior and exterior with newer stuff (paint keeps on bubbling and peeling)
-replace the windows with bigger ones to bring in more light and also have the new ones tinted
-and a lot more you guys can suggest