Don't bother using that much belt. Also, Use three guns, instead of having just the front two and putting deck armor. You need to start practicing BB moves that will prepare you for your Iowa at lvl 89
Also, check your crew. You need to plan ahead to see how far you plan to go. Do you want to go all the way to lvl 120 for the BB6 or lvl 103 for BB5? Do you have enough engineers?