Personally I wouldn't recommend washing to 18.75k hp @ Lv. 135 because it's unnecessary. If you have decent INT equips you should be able to have enough bonus Mp to wash to 18.75k by Lv. 150 ish 15 int hat, 10+ in overall, 5 int earrings, 10 int cape, 7 int wand, 5 int glove should suffice.