You should try cutting down on cards in general, aim to go down to 60 or 61 cards.
You also want Iron Islands Fishmonger for set up and if your opponent kills some stuff during military challenges.
You don't really need Nighttime Raid if you already run Asha Greyjoy (KotI) you already have stealth on everyone.
28 Characters in total is a bit low for an aggressive deck, and 28 locations is a bit high. Try to cut it down to 20 locations, I think cards like Scouting Vessel and Iron Islands Market and King Balon's Solar have to go. You might want another Iron Fleet Scout though.
Are you sure you want to delete this decklist?