for lvling purpose i think you should use the musashi over yamato, the extra dp, extra slot and more binds really are better
i feel the shinano needs to have support that are atleast lvl 105+ to make it a effective ship
the shinano can blockshot but your aim needs to be seriously top notch to land the shells
but i will comment on that ship when i can actually play it
the musashi is a good ship to play in, it plays exactly like yamato but musashi benefits from 1 extra support slot and more dp, i do love this ship.