I'm finding the ships part of the game quite difficult. I almost have both ghost and phantom to 3 stars and I'm focusing on biggs as well. I've got kru and his ship to 4 stars.
I struggle greatly with most challenges and fleet battles (can't clear 2 normal). I find that I can't get good synergy with what I have.
Should I focus on some other ships. What's the best way to use ghost and phantom in terms of strategy? What's the best capital lead?
What should I be spending my ship energy on? The only thing I do well in this section is arena, where I can make top 50.