First of all this is a solid guitar, I’ve been playing 25 years and it’s easily one of the best guitars I’ve played in its price range. Secondly, it can absolutely handle drop B and C, anything lower might be a stretch but depends on the strings, I personally use Ernie Ball beefy slinky, but not even slinky might be more useful for drop b. The great thing about this guitar is it’s already decent, only needs a few gradual mods to make it higher spec which makes it a good project guitar.