Currently, i haven't beaten whale 13-5, 16-1 to 16-4, 17-1, and 17-3.
storyline wise, i'm fully cleared up to 28-4 (which i haven't started).
all concept missions are cleared too. But not sure where i'm at on nation battles... I do know it's kinda low since I only really do them if I need flower gems...
Whaleship power (without assistance) is at: 1,152,022
strongest power I can get for a 4 team setup is: 616,008
Those teams also hold up to 24 rainbows (6 of each type).
Strongest friend I can find is around 109k power (not even sure how they got that much....)
considering it's been a little over a year of playing this game for me, i've come quite a long way