I am full lvl bash. I hit FBH at around 50k with inspiration, Kraken at 80k. But that is with all kinds of buffs including baphot hat, +20 str food, terrayaki octopus leg and aspresio. I recently got a pair of chamber RWC with total of 6% atk boost, and both with golden scaraba cards. Unfortunately looks like total attack boost is kind of close to medal of honor + glorious ring combo. Lots of zeny wasted
full %ATK enchant RWC ring would be 14% total - that should yield you better damage than MoH/GRing, if slightly; but yeah, not necessarily easy to get perfect enchants