one more variant to help:
I recommend the #3 solution for 4/5 player and #2 for 6 player.
since Lani goes before Grey, try taking his navy the first turn and add a special consolidate on your capital in case you dont beat his navy. If his navy attacks the first turn, use your Raven to change your navy order to defend.
In my experience, Grey either gets pawned by Lani or tagteamed by him and Stark.
"friends dont let friends play video games"