first you should reach the max level for your equipment, after that you should donate the max daily coins to your group and max the group skills, after them you should use your coins in inner gates with the goal to claim the 4 quick runes (are 20k points per rune).

as i said: 1st equipment, 2nd group skills, 3rd inner gates. So if your equipment isn't maxed you go for it until is maxed (for your level, of course).