Help for an android project <3

Hello everybody. I wanted to know what I would have to take into account in graphic aspects to make a 3d game for android, my references are Maze shadow of light and MYM Elemental Guardians and planet of heroes(main).
The techniques I'm following are light bake, paht forward, occlusion culling, some variations in player setting, Graphics, Quality ,.
my second question is the API that should use OpenGL 0.2 / ES 0.3 / Vulkan

Attached captures: https://drive.google.com/open?id=1UfjJOiM6I7dmfczYz8_TfHR9Y1VzGkPG
Email: wore360@outlook.com