Yup, get medium refines until done, balance with getting 1050 cave keys everytime the rebate comes. Once you are done with medium refines, balance it with getting bells and chimes, then balance with getting myoboku items.

Also throw in the clothing and the unbound runes to get up chase damage and some power. But just make sure you have 1050 keys everytime for the ultimate essence from cave exploration rebate jackpot.